Want to convert .aiff files (8 cds) to .aac format without duplicating
I ripped an 8=cd set to .aiff and added these to my iTunes library, but forgot how large it is on my iPad. Is there a way to create a "mirror" of the 8 cd set in .aac format? If I convert tunes per cd, I end up with duplicates in that folder (1., 1., 2., 2.). I'd ideally like one .aiff version of the set and one in .aac. I'd relabel them accordingly, and also sync accordingly.
If that's too hard I would be happy with just substittuting the .aiff files with .aac ones. Not sure that is possible.
I imagine I could copy the files to an x-drive, delete what i have in the iTunes folder, and then reimport as .aac. Perhaps that's easiest?
Thanks.
MacBook Air (13-inch Mid 2011), Mac OS X (10.7.1), iPhone 5, iPad 3