I now have this problem, my 3000 odd Ogg files are listed as Other rather than Music, so don't appear in Media Player.

Log says this:

10 Jun 2010, 20:16:42: Tracker: State change from 'Indexing' --> 'Paused'
10 Jun 2010, 20:16:42: Tracker: Stopping disk space check
10 Jun 2010, 20:16:45: Tracker: Checking for statistics changes and signalling clients...
10 Jun 2010, 20:16:45: Tracker: Updating 'Images' with new count:143, old count:0, diff:143
10 Jun 2010, 20:16:45: Tracker: Updating 'Music' with new count:26, old count:0, diff:26
10 Jun 2010, 20:16:45: Tracker: Updating 'Other' with new count:3172, old count:2783, diff:389
10 Jun 2010, 20:16:45: Tracker: Updating 'Folders' with new count:366, old count:308, diff:58
10 Jun 2010, 20:16:45: Tracker: Updating 'Videos' with new count:11, old count:0, diff:11
10 Jun 2010, 20:16:45: Tracker: Updating 'Text' with new count:9, old count:1, diff:8
10 Jun 2010, 20:16:45: Tracker: Updating 'Files' with new count:3756, old count:3092, diff:664
10 Jun 2010, 20:16:45: Tracker: Updating 'Documents' with new count:29, old count:0, diff:29
10 Jun 2010, 20:16:45: Tracker: State change from 'Paused' --> 'Indexing'
10 Jun 2010, 20:16:45: Tracker: Starting disk space check for every 10 seconds


So I only see 26 music files, but those 3172 are my Ogg music files I am sure, and they WERE visible originally, but after tracker-processes -r they don't come back.

Any ideas?