SoundGrail - SoundGrail Music App designed for pianists, guitarists, and DJs.
MixPad - MixPad is free music Music Mixer and Recording software designed for easy audio production.
Splice - Music creation, collaboration, and sharing made simple.
Add Audio to Video - Add Audio to Video empowers you to add custom audio tracks to your video files.
keezy - A colorful soundboard. Play with music.
Audio Video Editor and Mixer - Audio Video Editor and Mixer is a tool that helps you add changes to your video and audio files.