Currently i'm using mp3Trim which does the cutting batch-job somewhat great (could do silence detection better!).
Problem is that mp3Trim gets rid of my MP3Gain undo information, which I would pretty much like to keep
Also i'm looking for software that does manual cutting in a way simelar to Cool Edit/Audition. I already tried MP3 Surgeon, which has the ability, but it's interface makes it inefficient (it's optimized for cutting one large mp3 into many small pieces).