diff --git a/src/components/SettingForms/Sound/SoundSettingsFields.tsx b/src/components/SettingForms/Sound/SoundSettingsFields.tsx
index 41d039e..c2f1fb1 100644
--- a/src/components/SettingForms/Sound/SoundSettingsFields.tsx
+++ b/src/components/SettingForms/Sound/SoundSettingsFields.tsx
@@ -32,7 +32,6 @@ const SoundSettingsFields = () => {
       hotlistSoundVolume: state.hotlistSoundVolume,
       soundOptions: [...(state.soundOptions ?? [])],
     };
-
     dispatch({ type: "UPDATE", payload: updatedValues });
 
     const result = await mutation.mutateAsync({
diff --git a/src/components/SettingForms/Sound/SoundUpload.tsx b/src/components/SettingForms/Sound/SoundUpload.tsx
index c30d389..30a03e6 100644
--- a/src/components/SettingForms/Sound/SoundUpload.tsx
+++ b/src/components/SettingForms/Sound/SoundUpload.tsx
@@ -4,16 +4,21 @@ import type { SoundUploadValue } from "../../../types/types";
 import { useSoundContext } from "../../../context/SoundContext";
 import { toast } from "sonner";
 import { useCameraBlackboard } from "../../../hooks/useCameraBlackboard";
+import { useFileUpload } from "../../../hooks/useFileUpload";
 
 const SoundUpload = () => {
   const { state, dispatch } = useSoundContext();
   const { mutation } = useCameraBlackboard();
+  const { mutation: fileMutation } = useFileUpload({
+    queryKey: state.sightingSound ? [state.sightingSound] : undefined,
+  });
 
   const initialValues: SoundUploadValue = {
     name: "",
     soundFile: null,
     soundFileName: "",
     soundUrl: "",
+    uploadedAt: Date.now(),
   };
 
   const handleSubmit = async (values: SoundUploadValue) => {
@@ -37,10 +42,9 @@ const SoundUpload = () => {
       path: "soundSettings",
       value: updatedValues,
     });
+    await fileMutation.mutateAsync(values.soundFile);
     if (result.reason !== "OK") {
       toast.error("Cannot update sound settings");
-    } else {
-      toast.success(`${values.name} file added`);
     }
 
     dispatch({ type: "ADD", payload: values });
@@ -48,7 +52,7 @@ const SoundUpload = () => {
 
   return (
     <Formik initialValues={initialValues} onSubmit={handleSubmit} enableReinitialize>
-      {({ setFieldValue, errors, setFieldError, values }) => (
+      {({ setFieldValue, errors, setFieldError }) => (
         <Form>
           <label htmlFor="soundFile" className="">
             Sound File
@@ -67,6 +71,12 @@ const SoundUpload = () => {
                   setFieldValue("name", e.target.files[0].name);
                   setFieldValue("soundFileName", e.target.files[0].name);
                   setFieldValue("soundFile", e.target.files[0]);
+                  setFieldValue("uploadedAt", Date.now());
+                  if (e?.target?.files[0]?.size >= 1 * 1024 * 1024) {
+                    setFieldError("soundFile", "larger than 1mb");
+                    toast.error("File larger than 1MB");
+                    return;
+                  }
                 } else {
                   setFieldError("soundFile", "Not an mp3 file");
                   toast.error("Not an mp3 file");
@@ -76,11 +86,6 @@ const SoundUpload = () => {
           </FormGroup>
 
           <div className="mt-4 flex flex-col items-center justify-center rounded-2xl border border-slate-800 bg-slate-900/40 p-10 text-center">
-            {!values.soundFile && (
-              <div className="mb-3 rounded-xl bg-slate-800 px-3 py-1 text-xs uppercase tracking-wider text-slate-400">
-                No uploaded sound files
-              </div>
-            )}
             <p className="max-w-md text-slate-300">
               Uploaded Sound files will appear in the <span className="font-bold">drop downs</span> once they are
               uploaded. They can be used for any <span className="text-blue-400">Sighting,</span>{" "}
diff --git a/src/components/SettingForms/Sound/SoundUploadCard.tsx b/src/components/SettingForms/Sound/SoundUploadCard.tsx
index 0c0ea2b..c8884fe 100644
--- a/src/components/SettingForms/Sound/SoundUploadCard.tsx
+++ b/src/components/SettingForms/Sound/SoundUploadCard.tsx
@@ -4,7 +4,7 @@ import SoundUpload from "./SoundUpload";
 
 const SoundUploadCard = () => {
   return (
-    <Card className="p-4 col-span-3 w-full">
+    <Card className="p-4 col-span-5 lg:col-span-3 w-full">
       <CardHeader title={"Sound upload"} />
       <SoundUpload />
     </Card>
diff --git a/src/components/SettingForms/System/Upload.ts b/src/components/SettingForms/System/Upload.ts
index f5b78ad..1403722 100644
--- a/src/components/SettingForms/System/Upload.ts
+++ b/src/components/SettingForms/System/Upload.ts
@@ -10,10 +10,7 @@ type BlobFileUpload = {
   };
 };
 
-export async function sendBlobFileUpload({
-  file,
-  opts,
-}: BlobFileUpload): Promise<string> {
+export async function sendBlobFileUpload({ file, opts }: BlobFileUpload): Promise<string> {
   if (!file) throw new Error("No file supplied");
   if (!opts?.uploadUrl) throw new Error("No URL supplied");
 
@@ -42,9 +39,7 @@ export async function sendBlobFileUpload({
     const bodyText = await resp.text();
 
     if (!resp.ok) {
-      throw new Error(
-        `Upload failed (${resp.status} ${resp.statusText}) from ${opts.uploadUrl} — ${bodyText}`
-      );
+      throw new Error(`Upload failed (${resp.status} ${resp.statusText}) from ${opts.uploadUrl} — ${bodyText}`);
     }
 
     return bodyText;
@@ -54,9 +49,7 @@ export async function sendBlobFileUpload({
     }
     // In browsers, fetch throws TypeError on network-level failures
     if (err instanceof TypeError) {
-      throw new Error(
-        `HTTP error uploading to ${opts.uploadUrl}: ${err.message}`
-      );
+      throw new Error(`HTTP error uploading to ${opts.uploadUrl}: ${err.message}`);
     }
     // Todo: fix error message response
     return `Hotlist Load OK`;
diff --git a/src/components/SightingsWidget/SightingWidget.tsx b/src/components/SightingsWidget/SightingWidget.tsx
index 2ff85b1..11827b8 100644
--- a/src/components/SightingsWidget/SightingWidget.tsx
+++ b/src/components/SightingsWidget/SightingWidget.tsx
@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import type { HitKind, QueuedHit, ReducedSightingType, SightingType } from "../../types/types";
-import { BLANK_IMG, getSoundFileURL } from "../../utils/utils";
+import { BLANK_IMG } from "../../utils/utils";
 import NumberPlate from "../PlateStack/NumberPlate";
 import Card from "../UI/Card";
 import CardHeader from "../UI/CardHeader";
@@ -19,6 +19,7 @@ import { useIntegrationsContext } from "../../context/IntegrationsContext";
 import { useSoundContext } from "../../context/SoundContext";
 import Loading from "../UI/Loading";
 import { checkIsHotListHit, getNPEDCategory } from "../../utils/utils";
+import { useCachedSoundSrc } from "../../hooks/usecachedSoundSrc";
 
 function useNow(tickMs = 1000) {
   const [, setNow] = useState(() => Date.now());
@@ -43,21 +44,8 @@ export default function SightingHistoryWidget({ className, title }: SightingHist
   useNow(1000);
   const { state } = useSoundContext();
 
-  const soundSrcNped = useMemo(() => {
-    if (state?.NPEDsound?.includes(".mp3") || state.NPEDsound?.includes(".wav")) {
-      const file = state.soundOptions?.find((item) => item.name === state.NPEDsound);
-      return file?.soundUrl ?? popup;
-    }
-    return getSoundFileURL(state.NPEDsound) ?? popup;
-  }, [state.NPEDsound, state.soundOptions]);
-
-  const soundSrcHotlist = useMemo(() => {
-    if (state?.hotlistSound?.includes(".mp3") || state.hotlistSound?.includes(".wav")) {
-      const file = state.soundOptions?.find((item) => item.name === state.hotlistSound);
-      return file?.soundUrl ?? notification;
-    }
-    return getSoundFileURL(state?.hotlistSound) ?? notification;
-  }, [state.hotlistSound, state.soundOptions]);
+  const { src: soundSrcHotlist } = useCachedSoundSrc(state?.hotlistSound, state?.soundOptions, notification);
+  const { src: soundSrcNped } = useCachedSoundSrc(state?.NPEDsound, state?.soundOptions, popup);
 
   const { play: npedSound } = useSound(soundSrcNped, { volume: state.NPEDsoundVolume });
   const { play: hotlistsound } = useSound(soundSrcHotlist, { volume: state.hotlistSoundVolume });
@@ -181,8 +169,8 @@ export default function SightingHistoryWidget({ className, title }: SightingHist
     if (!isSightingModalOpen && modalQueue.length > 0) {
       const next = modalQueue[0];
 
-      // if (next.kind === "NPED") npedSound();
-      // else hotlistsound();
+      if (next.kind === "NPED") npedSound();
+      else hotlistsound();
 
       setSelectedSighting(next.sighting);
       setSightingModalOpen(true);
diff --git a/src/components/UI/CardHeader.tsx b/src/components/UI/CardHeader.tsx
index 2d7c369..7a3893c 100644
--- a/src/components/UI/CardHeader.tsx
+++ b/src/components/UI/CardHeader.tsx
@@ -11,25 +11,18 @@ type CameraOverviewHeaderProps = {
   sighting?: SightingType | null;
 };
 
-const CardHeader = ({
-  title,
-  icon,
-  img,
-  sighting,
-}: CameraOverviewHeaderProps) => {
+const CardHeader = ({ title, icon, img, sighting }: CameraOverviewHeaderProps) => {
   return (
     <div
       className={clsx(
-        "w-full border-b border-gray-600 flex flex-row items-center space-x-2 md:mb-6 relative justify-between"
+        "w-full border-b border-gray-600 flex flex-row items-center space-x-2 mb-6 relative justify-between"
       )}
     >
       <div className="flex items-center space-x-2">
         {icon && <FontAwesomeIcon icon={icon} className="size-4" />}
         <h2 className="text-xl">{title}</h2>
       </div>
-      {img && (
-        <img src={img} alt="Logo" width={100} height={50} className="ml-auto" />
-      )}
+      {img && <img src={img} alt="Logo" width={100} height={50} className="ml-auto" />}
       {sighting?.vrm && <NumberPlate vrm={sighting.vrm} motion={false} />}
     </div>
   );
diff --git a/src/context/reducers/SoundContextReducer.ts b/src/context/reducers/SoundContextReducer.ts
index 0145094..15e2139 100644
--- a/src/context/reducers/SoundContextReducer.ts
+++ b/src/context/reducers/SoundContextReducer.ts
@@ -13,10 +13,12 @@ export const initialState: SoundState = {
     { name: "Ding", soundFileName: "ding" },
     { name: "Shutter", soundFileName: "shutter" },
     { name: "Warning (voice)", soundFileName: "warning" },
+    { name: "Attention (voice)", soundFileName: "attention" },
   ],
   sightingVolume: 1,
   NPEDsoundVolume: 1,
   hotlistSoundVolume: 1,
+  uploadedSound: null,
 };
 
 export function reducer(state: SoundState, action: SoundAction): SoundState {
@@ -62,7 +64,11 @@ export function reducer(state: SoundState, action: SoundAction): SoundState {
         ...state,
         hotlistSoundVolume: action.payload,
       };
-
+    case "UPLOADEDSOUND":
+      return {
+        ...state,
+        uploadedSound: action.payload,
+      };
     default:
       return state;
   }
diff --git a/src/hooks/useFileUpload.ts b/src/hooks/useFileUpload.ts
new file mode 100644
index 0000000..7bab593
--- /dev/null
+++ b/src/hooks/useFileUpload.ts
@@ -0,0 +1,45 @@
+import { useMutation, useQuery } from "@tanstack/react-query";
+import { CAM_BASE } from "../utils/config";
+import { toast } from "sonner";
+import { getOrCacheBlob } from "../utils/cacheSound";
+const camBase = import.meta.env.MODE !== "development" ? CAM_BASE : CAM_BASE;
+
+type UseFileUploadProps = {
+  queryKey?: string[];
+};
+
+const uploadFile = async (file: File) => {
+  const form = new FormData();
+  form.append("upload", file, file.name);
+  const response = await fetch(`${camBase}/upload/file-upload/3`, {
+    method: "POST",
+    body: form,
+  });
+  if (!response.ok) {
+    throw new Error("Cannot reach upload file endpoint");
+  }
+  return response.text();
+};
+
+const getUploadFiles = async ({ queryKey }: { queryKey: string[] }) => {
+  const [, fileName] = queryKey;
+  const url = fileName;
+  return getOrCacheBlob(url);
+};
+
+export const useFileUpload = ({ queryKey }: UseFileUploadProps) => {
+  const query = useQuery({
+    queryKey: ["getUploadFiles", ...(queryKey ?? [])],
+    queryFn: () => getUploadFiles({ queryKey: ["getUploadFiles", ...(queryKey ?? [])] }),
+    enabled: !!queryKey,
+  });
+
+  const mutation = useMutation({
+    mutationFn: (file: File) => uploadFile(file),
+    mutationKey: ["uploadFile"],
+    onError: (err) => toast.error(err ? err.message : ""),
+    onSuccess: async (msg) => toast.success(msg),
+  });
+
+  return { query: queryKey ? query : undefined, mutation };
+};
diff --git a/src/hooks/useSightingFeed.ts b/src/hooks/useSightingFeed.ts
index a3d19a8..520b4c0 100644
--- a/src/hooks/useSightingFeed.ts
+++ b/src/hooks/useSightingFeed.ts
@@ -1,13 +1,14 @@
-import { useEffect, useMemo, useRef, useState } from "react";
+import { useEffect, useRef, useState } from "react";
 import { useDebouncedCallback } from "use-debounce";
 import { Query, useQuery } from "@tanstack/react-query";
 import type { SightingType } from "../types/types";
 import { useSound } from "react-sounds";
 import { useSoundContext } from "../context/SoundContext";
-import { checkIsHotListHit, getNPEDCategory, getSoundFileURL } from "../utils/utils";
+import { checkIsHotListHit, getNPEDCategory } from "../utils/utils";
 import switchSound from "../assets/sounds/ui/switch.mp3";
 import notification from "../assets/sounds/ui/notification.mp3";
 import popup from "../assets/sounds/ui/popup_open.mp3";
+import { useCachedSoundSrc } from "./usecachedSoundSrc";
 
 async function fetchSighting(url: string | undefined, ref: number): Promise<SightingType> {
   const res = await fetch(`${url}${ref}`, {
@@ -24,29 +25,9 @@ export function useSightingFeed(url: string | undefined) {
   const [sessionStarted, setSessionStarted] = useState(false);
   const [selectedSighting, setSelectedSighting] = useState<SightingType | null>(null);
 
-  const soundSrcHotlist = useMemo(() => {
-    if (state?.hotlistSound?.includes(".mp3") || state.hotlistSound?.includes(".wav")) {
-      const file = state.soundOptions?.find((item) => item.name === state.hotlistSound);
-      return file?.soundUrl ?? notification;
-    }
-    return getSoundFileURL(state?.hotlistSound) ?? notification;
-  }, [state.hotlistSound, state.soundOptions]);
-
-  const soundSrcNped = useMemo(() => {
-    if (state?.NPEDsound?.includes(".mp3") || state.NPEDsound?.includes(".wav")) {
-      const file = state.soundOptions?.find((item) => item.name === state.NPEDsound);
-      return file?.soundUrl ?? popup;
-    }
-    return getSoundFileURL(state.NPEDsound) ?? popup;
-  }, [state.NPEDsound, state.soundOptions]);
-
-  const soundSrc = useMemo(() => {
-    if (state?.sightingSound?.includes(".mp3") || state.sightingSound?.includes(".wav")) {
-      const file = state.soundOptions?.find((item) => item.name === state.sightingSound);
-      return file?.soundUrl ?? switchSound;
-    }
-    return getSoundFileURL(state?.sightingSound) ?? switchSound;
-  }, [state.sightingSound, state.soundOptions]);
+  const { src: soundSrc } = useCachedSoundSrc(state?.sightingSound, state?.soundOptions, switchSound);
+  const { src: soundSrcHotlist } = useCachedSoundSrc(state?.hotlistSound, state?.soundOptions, notification);
+  const { src: soundSrcNped } = useCachedSoundSrc(state?.NPEDsound, state?.soundOptions, popup);
 
   const { play: hotlistsound } = useSound(soundSrcHotlist, { volume: state.hotlistSoundVolume });
   const { play: npedSound } = useSound(soundSrcNped, { volume: state.NPEDsoundVolume });
diff --git a/src/hooks/usecachedSoundSrc.ts b/src/hooks/usecachedSoundSrc.ts
new file mode 100644
index 0000000..ed99974
--- /dev/null
+++ b/src/hooks/usecachedSoundSrc.ts
@@ -0,0 +1,56 @@
+import { useEffect, useMemo, useRef, useState } from "react";
+import { useFileUpload } from "./useFileUpload";
+import { getSoundFileURL } from "../utils/utils";
+import type { SoundUploadValue } from "../types/types";
+import { resolveSoundSource } from "../utils/soundResolver";
+
+export function useCachedSoundSrc(
+  selected: string | undefined,
+  soundOptions: SoundUploadValue[] | undefined,
+  fallbackUrl: string
+) {
+  const isUploaded = !!selected && (selected.endsWith(".mp3") || selected.endsWith(".wav"));
+
+  const resolved = resolveSoundSource(selected, soundOptions);
+
+  const { query } = useFileUpload({
+    queryKey: resolved?.type === "uploaded" ? [resolved?.url] : undefined,
+  });
+
+  const [objectUrl, setObjectUrl] = useState<string>();
+  const objRef = useRef<string | null>(null);
+
+  useEffect(() => {
+    const blob = query?.data;
+
+    if (blob instanceof Blob) {
+      if (objRef.current) URL.revokeObjectURL(objRef.current);
+      const url = URL.createObjectURL(blob);
+      objRef.current = url;
+      setObjectUrl(url);
+    } else {
+      if (objRef.current) URL.revokeObjectURL(objRef.current);
+      objRef.current = null;
+      setObjectUrl(undefined);
+    }
+  }, [query?.data]);
+
+  useEffect(() => {
+    return () => {
+      if (objRef.current) URL.revokeObjectURL(objRef.current);
+    };
+  }, []);
+
+  const src = useMemo(() => {
+    if (isUploaded && objectUrl) return objectUrl;
+    if (!selected) return fallbackUrl;
+    return getSoundFileURL(selected) ?? fallbackUrl;
+  }, [isUploaded, objectUrl, selected, fallbackUrl]);
+
+  return {
+    src,
+    isUploaded,
+    isLoading: !!query?.isLoading,
+    error: (query?.error as Error) || undefined,
+  };
+}
diff --git a/src/types/types.ts b/src/types/types.ts
index 9229e44..83d2a88 100644
--- a/src/types/types.ts
+++ b/src/types/types.ts
@@ -302,6 +302,7 @@ export type SoundUploadValue = {
   soundFileName?: string;
   soundFile?: File | null;
   soundUrl?: string;
+  uploadedAt?: number;
 };
 
 export type SoundState = {
@@ -313,6 +314,7 @@ export type SoundState = {
   sightingVolume: number;
   NPEDsoundVolume: number;
   hotlistSoundVolume: number;
+  uploadedSound?: Blob | null;
 };
 
 type UpdateAction = {
@@ -339,7 +341,12 @@ type VolumeAction = {
   payload: number;
 };
 
-export type SoundAction = UpdateAction | AddAction | VolumeAction;
+type UploadedState = {
+  type: "UPLOADEDSOUND";
+  payload: Blob | undefined;
+};
+
+export type SoundAction = UpdateAction | AddAction | VolumeAction | UploadedState;
 export type WifiSettingValues = {
   ssid: string;
   password: string;
diff --git a/src/utils/cacheSound.ts b/src/utils/cacheSound.ts
new file mode 100644
index 0000000..d11f825
--- /dev/null
+++ b/src/utils/cacheSound.ts
@@ -0,0 +1,16 @@
+export async function getOrCacheBlob(url: string) {
+  const cache = await caches.open("app-sounds-v1");
+  const hit = await cache.match(url);
+  if (hit) return await hit.blob();
+
+  const res = await fetch(url, { cache: "no-store" });
+  if (!res.ok) throw new Error(`Fetch failed: ${res.status}`);
+
+  await cache.put(url, res.clone());
+  return await res.blob();
+}
+
+export async function evictFromCache(url: string) {
+  const cache = await caches.open("app-sounds-v1");
+  await cache.delete(url);
+}
diff --git a/src/utils/soundResolver.ts b/src/utils/soundResolver.ts
new file mode 100644
index 0000000..5da4bd7
--- /dev/null
+++ b/src/utils/soundResolver.ts
@@ -0,0 +1,24 @@
+import { getSoundFileURL } from "./utils";
+import { CAM_BASE } from "./config";
+import type { SoundUploadValue } from "../types/types";
+
+export function resolveSoundSource(
+  selected: string | undefined,
+  soundOptions: SoundUploadValue[] | undefined
+): { type: "uploaded"; url: string } | { type: "builtin"; url: string } | undefined {
+  if (!selected) return undefined;
+
+  const isFile = selected.endsWith(".mp3") || selected.endsWith(".wav");
+
+  if (isFile) {
+    const match = soundOptions?.find((o) => o.soundFileName === selected);
+    const version = match?.uploadedAt ?? 0;
+    const url = `${CAM_BASE}/Mobile/${encodeURIComponent(selected)}?v=${version}`;
+    return { type: "uploaded", url };
+  }
+
+  const builtin = getSoundFileURL(selected);
+  if (builtin) return { type: "builtin", url: builtin };
+
+  return undefined;
+}