I found a very helpful thread here on taking music stored in FLAC and converting it to AAC, including a helpful note from Otto42 on getting this right. I need to throw a kink into the equation and see the best way to handle converting for the second time.

I went to the trouble of feeding my 7500 songs from my CD collection into iTunes to get them onto my iPod. Yes, color me obsessed, but I took the time. Things went in at the default AAC 128 CBR. It's only been after some listening that I've wished I'd used a higher bit rate. I'm happy to stay with AAC, but after reading other topics I think I don't want to do this a bunch more times, and plan to use EAC to rip everything to FLAC and store it somewhere. I want to then convert FLAC to AAC, and I've found the instructions and elements to get that done.

What I want to do, if at all possible, is to *replace* the music I have with higher quality m4a files. Is ITunesEncode geared to handle this? Silly? Maybe, but I'm trying not to lose the additional work that has been done (different playlists, play history, etc.). I know - we can't have it all - but it's worth asking ahead of time, right?

TIA,
John