Have you ever wanted to muck around a bit with your songs - speed up the slow ones and slow down the fast ones etc? If so, you'll love Neutrino (formerly AudioCodex and Machinehead).
Neutrino is a fun audio player that allows you to shift the pitch and rate of your audio files and integrates perfectly with iTunes. Neutrino has been designed with musicians and audio professionals in mind, who need maximum control over the pitch of their music and is much more than just your average DJ pitch shifter. This means you can add effects, reverb, loops, time, pitch, audio Units plug-ins and more. You can improve music with equalizers and visualize music as it plays.
Apart from changing the pitch and tempo, you can of course also twist, squelch, distort and warp your favorite music with few problems. However, it's not particularly easy to work out how to locate some of these functions and the developers could have made them more obvious on the interface. Neutrino also isn't particularly well integrated with external music apps such as scrobbling to Last.fm for example. It is, however, fairly well integrated with iTunes.
Neutrino is a decent tool for all those that want to have a bit of fun with their music or professionals that want to refine it.
