sync. error handling

[6thelements]

wow-- you guys crank out these faster than i update my zen!! keep up the great work.

on a different note, i've noticed if anything goes wrong while syncing, the sync process stops entirely and waits for the user's ok. i've had a few mp3s do this (and can't figure out why b/c the problem appeared with different files on the next sync). however, it might be better to skip problematic files and show an error log if relevant at the end.

again, great works guys. thanks!!