Yesterday I upgraded to the 3.0 firmware, after some problems with the upgrade I finaly managed to upgrade it by using another computer, afterwards I did my restore and synced all my music.

When I look in iTunes it says that I have for 634MB of Audio on my iPhone and yet when I start the iPod app on my iPhone it says that there is no content.

Any idea why?

Originally Posted by Andyke

Yesterday I upgraded to the 3.0 firmware, after some problems with the upgrade I finaly managed to upgrade it by using another computer, afterwards I did my restore and synced all my music.

When I look in iTunes it says that I have for 634MB of Audio on my iPhone and yet when I start the iPod app on my iPhone it says that there is no content.

Any idea why?

I did have the same problem as you.
The proces of syncing was interupted somewher in the middle and all my music was gone although th eiTunes showed those MB as used.

Try this:
1.Sync music with only one checked song...so the iTunes erases all those ???MB.
2. Check back all songs in iTunes and resync.
Hope it helps