I had backed up my iTunes library of Apple losless files and when restoring realized that the firewire drive was corrupting data and messed up some (lots) of my files. A few I cought because they were reduced to a couple seconds long, but I don't want to have to go through them all one by one to listed for pops/static/etc.

Is there a way to batch check all these files to make sure they are valid? (Running OS X 10.4, but if there's a good solution that requires Windows or Linux I think I could manage.)

i don't think faad has a verification option, so perhaps you can just generate a checksum on the original source and compare.

on linux: cfv -C -rr (deep) -r (seperate) *{aac,mp4,m4a,whatever}
on windows: sweep + md5sumwhatever (or perhaps fookitchensink does this, dunno)


later

I think the only way is to decode the songs to PCM (aiff or wav). Valid files should decode normal, while broken files should fail. Not 100% sure though.
Select all files in iTunes and click "Advanced > Convert Selection to ..."

By the way, Apple Lossless (ALAC) and AAC are different codecs. So you might want to edit the thread topic!

Microsoft's FCIV command line tool can also do this.

I used an md5 sum to check that copying the files gives different results every time and that the connection is bad, but I don't have the originals to compare to since this is backup/restore operation.

I tried decoding to wav and iTunes didn't complain. When playing back that file the burst of static is there but again no complaints.

Sorry about the title. Guess I wasn't thinking at the time. How do I change it?