Unfortunately it seems to be un-maintained at the moment.
Here's an unofficial release with fixes for the bugs which irritate me
Edit:if you want to tell me about a problem with this plugin, please go here rather than leaving a comment... I'll see it quicker :-)
Edit2:I've created a fork of musictracker at google code, go there for the most recent version
2008-07-10 (Version 0.4.2 unofficial)
- Fix finding window for Foobar2000 0.9.5.3 and later
- Don't crash if track info from player isn't valid UTF-8!
- Get UTF-8 track info from iTunes and WMP
- Avoid damaging valid UTF-8 track info when removing unprintable characters
- If the track info message is empty, try to restore the status message selected in UI (e.g. for when your player stopped message is empty)
- Remove use of modified MSN protocol plugin to append now-playing info to nickname (I suggest you use msn-pecan which supports personal messages)
- Fixed to build with latest purple