Download of Loopster 1.8 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This software for Mac OS X was originally produced by Heinz Goetz. The software is included in Audio & Video Tools.
From the developer:
Loopster is an audio player that lets you adjust your music's speed without changing its pitch, or modify its pitch without altering the speed. Practice, rehearse, and transcribe your music with unprecedented efficiency. Add loops and locators to focus on important song sections, and save your songs in helpful playlists.
You may want to check out more Mac applications, such as Amarra Mini or MacAppStuff Sounds, which might be similar to Loopster.