What's the exact reason you want to use Window's Media Player?

that's just an id3 tag within the mp3 that it doesn't understand - is metadata, like TITLE or ALBUM, nothing really to do with the music. (GEOB = General Encapsulated Object, apparently. probably album art. defined in id3 v2.4.0)

> Apparently the mp3 appears to play in an infinite loop. Could we tweak the code a bit perhaps, such that playback stops when the mp3 runs it course, rather than having the mp3 start all over again.

1. void setup() {
2.   size(512, 200, P3D);
3.   minim = new Minim(this);
4.   groove = minim.loadFile("groove.mp3");
5.   groove.loop();
6. }

um, dunno, maybe there's something in the code that causes it to loop and removing that would stop it...