You could have downloaded SongTool 1.1 for Mac from our software library for free. SongTool for Mac is categorized as Audio & Video Tools. The actual developer of this software for Mac is Joel Perry.
From the developer:
SongTool, a powerful audio player, gives you total control of all the music on your Mac. A single button provides easy access to section looping. Speed and pitch can be changed quickly and precisely, and these adjustments can be saved for each song. A 10-band graphic equalizer allows for the creation and storage of user presets.
You may want to check out more Mac applications, such as M-Audio Key Rig, which might be similar to SongTool.