
For editing audio files, Kubuntu provides Sound Editor (Audacity), a full-featured, free and open source software application. To use Sound Editor (Audacity):
Install Sound Editor (Audacity) from the package manager
Run Sound Editor (Audacity) by going to ->->->.
Detailed instructions (including tutorials and weblinks) on using Sound Editor (Audacity) can be found by going to -> from within Sound Editor (Audacity).