Sweep, version 0.8.4 can do lots of stuff, including turn your keyboard into a piano...
Sweep is an audio editor and live playback tool for GNU/Linux, BSD and compatible systems. It supports many music and voice formats including WAV, AIFF, Ogg Vorbis, Speex and MP3, with multichannel editing and LADSPA effects plugins.
It is Free Software, available under the GNU General Public Licence.
