I am using Windows Media Player 11 to rip music to my pogoplug drive (a 500G Seagate USB drive).  Everything seems to be working, but when I go to the pogoplug web interface and then click on Music and then click on Albums, I see several albums listed as:

Unknown Album (mm/dd/yyyy) (hh:mm:ss pm)

If I select an album it will have nothing or up to 3 songs listed as:

Track n      Unknown Artist     Unknown Album    Unknown Genre

The tracks don't seem to actually play anything.  I can delete the tracks.  But I cannot delete the "unknown album".  Interestingly, I don't see anything like this on my drive or in any other list in the pogoplug web interface.

Can anyone tell me what is going on and how I can clean it up?

Thanks!