Hello,
RPM claims that http://xpra.org/beta/CentOS/6.2/x86_64/xpra-0.2.0-1.x86_64.rpm depends on libvpx and libx264.
However, it was built with vpx and x264 as static libs, so the dependency should be removed from the metadata.
r759 should have fixed this, please download and try again
Confirmed fixed.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/113