Wavosaur is a free editor that can edit, record and play sounds, import WAV, AIFF, MP3, and raw files.
Wavosaur is ASIO compatible and can host VST plugins effect for real-time audio processing.
Edit your sounds using cut, copy, paste, mix etc.
apply effects in real time with the virtual VST plugin rack.
The program also has a batch processor, many analysis tool 2D & 3D frequency-analysis, statistics & sonogram.
Support for markers & loop points.
You can also normalize, change volume, resample, mute, insert silence, remove DC offset, "vocal remover" and many other features.
You can control the program with MIDI and change the editor skin.