I had a problem that for one album, the cover art showed up corrupt on my N900, while the cover showed 100% correct on my PC in Windows Media Player and mp3tag editor. this strangely enough only happened with Beyonce's new album "4".

When I changed "4" into "Four" in the mp3tag editor, the cover art showed up crystal clear on my N900. So maybe the N900 does not accept album titles starting with a number?

Anyway, although this may not be the best "N900 tip of the day" ever, maybe it is useful to someone