I'm picky about my audio files. I want to make sure that I have perfect sound quality, whether it is for my music, a video project, or just every day use. RX2 - REX2 Audio File is awesome for looping files (when I'm recording), giving me perfect slices of sound that I can splice together, and storing sound bites and other odds and ends. I can match the tempo I want when I'm working through a song or movie, or just use the file with my mono and stereo sound bites for added emphasis. Highly recommend.
For more info, check it out for yourself