Re: Why does MP3 transcoding lose so much quality?
Reply #2 –
ffmpeg also can cut many formats (and mp3 too) without transcoding if you use the right parameters, and it's free and works on any platform.
also please note that
1: listening to the difference in isolation won't tell you whether it's possible to hear the difference together with the signal.
2: lossy compression is not about simply discarding some frequencies, if it was so simple then the files would be much larger.