Command line interface (Terminal) application

Java
6

Yes and no. If you try using a BufferedReader to read an MP3 file, it will just read a bunch of gibberish since the MP3 file encoding is not just string data. Remember that everything stored on a computer is just a bunch of 1s and 0s, so it will just try to interpret that as text, but it will look like gibberish.

Instead, you should use a library as I already mentioned over in Coding challenge - #2 by jmrunkle. If you use JLayer, you would end up with something like this:

try (Player jlPlayer = new Player(
  new BufferedInputStream(
    new FileInputStream(mp3FileToPlay)))) {
  jlPlayer.play();
}

NOTE: that is extremely simplified, but may still be useful for you.