Hi! If you are running (or willing to run) development version of the OS (http://pkg.opensolaris.org/dev/), then recently beta of audigyls driver for Boomer was released, which you can find at http://www.opensolaris.org/os/project/opensound/files/
see this announce on opensound-discuss, the people there will probably be able to help you in case of problems: http://www.opensolaris.org/jive/thread.jspa?threadID=111661&tstart=0 Cheers, Einar.
