Source
For stable releases and regular downloads, please go to the downloads page!
Otherwise...
You can browse the source code (trunk) at: https://code.launchpad.net/~weboide/audiopreview/trunk
To get a copy of the repository, you need to have Bazaar (a VCS) installed, and then type:
bzr branch lp:audiopreview
And you'll get a branch (copy) into the current folder.