I have packaged the newer version of crystalhd kernel dkms, libcrystalhd3 and gstreamer plug-in crystalhd for ubuntu 11.10. Feel free to download it from here:
crystalhd-dkms_0.0~git20110715.fdd2f19-4.2_i386.deb
libcrystalhd3_0.0~git20110715.fdd2f19-4.2_i386.deb
gstreamer0.10-crystalhd_0.0~git20110715.fdd2f19-4.2_i386.deb
Debug package if you need it:
libcrystalhd-dev_0.0~git20110715.fdd2f19-4.2_i386.deb
TIP: there is also XBMC built with crystalhd support available in my repo.