I have transferred my music collection on the N900 and after a while noticed that some tracks were missing in the albums.

Apparently all the missing tracks were in the (unknown album) - (unknown artist) at the end of the Albums list.

The ID3 tags in those tracks are fine when checked on my PC, but it seems that media player still doesn't recognize the tracks. Oh, however it DID pick out the album artwork to display correctly.

Any suggestion? Thanks in advance for you help!