1)   Audio Converter & Mixer 3.0.172
Audio Converter & Mixer is an easy-to-use tool for converting and mixing all kinds of sound files into one large wav file. It can configure the volume, start time and playback speed of each sound track.

 2)   Audio Converter Mixer 3.0.19
Audio Converter & Mixer can convert and mix all kinds of sound files into one large wav file. Audio Converter & Mixer can configure the volume, start time and playback speed of each sound track. Extract sound track from many audio and video formats.