The source code is available for svn checkout under the code tab is can be downloaded as 'n zip file from revision 17. The libs folder is also available for download and is not included in the svn checkout. The libraries are required for MP3 conversion.
Please note: Most of the code has not be thoroughly tested and is still in the experimental phase. I plan to cleanup the code once I have implemented all the main features of the both the metronome and the click track generator.