Maybe tbeta will work too soon !!!!!
To have unicap working with gspca drivers (ps3eye or other) :
Get the latest version of Unicap Libraries Source Code:
tar -xvzf unicap-0.9.5.tar.gz
get my little patch
and patch the unicap sources
patch -p0 < unicap-gspca.patch
and then make and install
(Be careful to not have a conflict with the packaged version if installed, remove the unicap libraries with the help of synaptic.)
sudo make install
For tbeta it's a bit more complicated because the unicap library is built into tbeta executable, so we need that some developer of tbeta applies the patch on his unicap library and build a new linux version of tbeta for us or release the source code.