Implemented Oscilloscope correctly now

Have tested it with a 5 minute long audio file
Bigger files and different formats still needs testing

src/hooks/useAudioAnalyzer.ts

@@ -12,12 +12,14 @@ export function useAudioAnalyzer() {
   const [isLoading, setIsLoading] = useState(false);
   const [error, setError] = useState<string | null>(null);
   const [fileName, setFileName] = useState<string | null>(null);
+  const [originalFile, setOriginalFile] = useState<File | null>(null);
   const audioContextRef = useRef<AudioContext | null>(null);
 
   const loadAudioFile = useCallback(async (file: File) => {
     setIsLoading(true);
     setError(null);
     setFileName(file.name);
+    setOriginalFile(file);
 
     try {
       // Create or reuse AudioContext
@@ -55,6 +57,7 @@ export function useAudioAnalyzer() {
   const reset = useCallback(() => {
     setAudioData(null);
     setFileName(null);
+    setOriginalFile(null);
     setError(null);
   }, []);
 
@@ -63,6 +66,7 @@ export function useAudioAnalyzer() {
     isLoading,
     error,
     fileName,
+    originalFile,
     loadAudioFile,
     reset,
   };