When you select an audio file in the Mac Finder, Snapper immediately appears right beneath the current window, showing you the waveform.

If you want to play the audio file, all you have to do is hit the space bar or doubleclick in the waveform. Or use autoplay to start playing the moment you select the file. Vari*speed is available too.

Drag, Drop and Convert In the Snapper waveform you can select a part of the sound file and: Learn more.