A Musca bazaar repository is available on launchpad. It should always build, but it is a development tree so it may not be stable.
This is the latest dated snapshot considered stable: musca-0.9.24.tgz
Older releases are listed with their change log entries.
Install the above for your system, grab the source, and run make. Copy the resulting musca binary into your $PATH somewhere.
2013-01-04 eof