I am lost with this one ... Being a Mac person, I told my medical specialist sister-in-law (actually my brother in law's wife) who has spent a lot of time with bird sounds she recorded I think with her quality dictation recorder (how dumb considering that the basis for stereophile sound was always put the quality at the beginning ie turntable first etc ... But anyway, I have 20 odd AIFF-C tracks, and their volume is all over the place. I need to level it more ... and also, their is sum hum at low volumes. I thought I could use Garage band but it does not seem suited, and the sound control features in Final Cut Pro may not work plus I doubt I could output them back to a CD. I need to be able to output them to a standard CD form. Any help would be greatly appreciated.