so. i've just synced up my ipod to this computer.

the music is stored on my portable harddrive, plugged into this pc.

i re-synced it all etc blah blah

BUT it doesn't appear to have put everything on my ipod. loads of albums and songs are missing... such as, it's put the daft punk Musique on the ipod but not the other albums...

WTF? how do i fix this? :(