| I think your priority should be to minimize the effects of any damage done during the encoding process, not recover lost audio information. It's gone. Treat the files with kid gloves--convert them to a lossless format asap, leave them at their native sample rate, and master as you normally would.
Most of the problems I've heard in MP3 recordings are fluttery or washy high end. That shouldn't be too much of a problem with a 320kbps file but I'd imagine if there was a spot to go easy in your process, it would be top end EQ. Adding too much there might highlight audible compression artifacts. |