Since SourceForge's public CVS is shaky there is a CVS snapshot being built every two hours. Download the snapshots here:
MultiSync CVS
The real public CVS server is 24 hours delayed. To check out the MultiSync do the following:

cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/multisync login

cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/multisync co multisync

The CVS head is being used for 0.90 development and is currently unstable. If you want to follow 0.8X releases, check out branch_08X instead:

cvs -z3 -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/multisync co -r branch_08X multisync