Another review says "simple, elegant, effective" and Fission certainly is that. The interface is excellent. One other thing the other reviews don't mention: it will work on files others won't. I did over an hours recording of an event with spoken word and music into *.WAV. The mixer desk did "something" because the file was corrupted part way through. MAC OS X would not even copy the file and other tools refused to work on it. Fission did and edited it. Great relief. Thanks.