Is there a music application that integrates with iTunes and shows the waveform of the song? I am looking for a music applications that integrates with my iTunes library and plays songs something like this:


Playing a song:


Screenshots from SoundCloud.

I really want to be able to play a song, see the waveform and be able to skip in the song. Is there such an application?
Have you seen Capo? I have the iPad version, and it does what you want. I assume the desktop version does the same.