i got rockbox on my first generation (1 gig) nano last night. everything is fantastic,exept when i scroll to "database"  and go inside , about half my songs are marked as"untagged"  ? the rest show up  but when i open up "tracks" to view all my songs, half are fine and ALOT are marked as untagged?so if i wana find a song that is untagged i have to scroll through 50 songs to find it!!!  i even tried swiping my nano clean and then loading the rockbox software on before i loaded my songs on, but they are still marked as untagged? please help me