The CoolEdit 2.1 Pro is a complex audio editor that has built in editing, effects, multiple track overlay, recording facilities and much more. The CoolEdit is easy to use and works on most Windows platforms and most processors. The function that works best is the noise reduction. Unlike the freeware equivalents of CoolEdit that have less precise noise removal, The 2.1 Pro delivers with no additional digital sound. It is the best software I have ever used for MIDI files, recording and editing. I recommend using it with the cheapest licence as there are more up-to-date programs for professional use.