Short description of MixPad Professional Audio Mixer 2.20: MixPad Professional is multi-track mixing software designed for audio production. MixPad Professional lets you load or record over 100 audio clips and mix them together. You can place them at different times, adjust volume, pan, or fade in or out. MixPad Professional is the digital replacement of using a multitrack recorder and mixing desk. This music mixing software allows you to create remixes and mashups as well as add your own recorded audio.