I have a some Mp3 files (song.mp3) and I want to pack all of them into a single dat file (mp3s.dat) and be able to load and play the audio from the dat file. I know its possible because you can do it with midis but i’m not sure how to do it with either. Any help would be appreciated! Thanks!

I tried to pack the Mp3s into the Mp3.dat which I succeeded in sort of anyways here is the code:

public void packAFile() {
            ArrayList<File> filesToPack = new ArrayList<File>();
            int amountToPack = getAmountOfFilesInFolder(signlink.findcachedir()+"/Mp3/");
            File[] file = new File(signlink.findcachedir()+"/Mp3/").listFiles();
            for(int i = 0; i < amountToPack; i++) {
                filesToPack.add(file[i]);
                try(FileOutputStream fos = new FileOutputStream(signlink.findcachedir()+"/Mp3/MP3.dat"); ObjectOutputStream oos = new ObjectOutputStream(fos);) {
                    oos.writeObject(filesToPack);
                    oos.close();
                    fos.close();
                }catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

And this is the read packed files method:

ArrayList<File> unpackedMp3s = new ArrayList<File>();
        
        public void readMp3Dat() {
            try (FileInputStream fis = new FileInputStream(signlink.findcachedir()+"/Mp3/MP3.dat");
                     ObjectInputStream ois = new ObjectInputStream(fis);){
                unpackedMp3s = (ArrayList) ois.readObject();
                    ois.close();
                    fis.close();

                    System.out.println("UnpackedMp3s = " + unpackedMp3s);
                } catch (IOException | ClassNotFoundException e) {
                    e.printStackTrace();
                }

           }

and the method i tried to play the song with:

public void playMp3FromDat(String song) {
            readMp3Dat();
            for(File songToPlay : unpackedMp3s) {
                if(song.equalsIgnoreCase(songToPlay.getName())) {
                    MP3 s = new MP3(song);
                    s.play();
                }
                System.out.println("Songs: "+songToPlay.getName());
            }
            
        }