mp3DirectCut is a fast and extensive audio editor and recorder for compressed mp3. You can directly cut, copy, paste or change the volume without re-encoding anything of the file. This prevents loss of audio quality.
The program enables easiest navigation even on large files and gives you a visualisation of the MP3 audio data. It can handle Cue sheets allowing to split a file at cue positions.
And you can also directly record and encode an MP3 from your audio input device. The built in recorder creates mp3 on the fly from your audio input.
Also, you can remove parts, change the volume, split files or copy regions to several new files. All without the need to decompress your MP3 into a PCM format. This saves work, encoding time and disk space. And there is no quality loss through any re-compressions!