from creative labs - OPENAL library....
http://en.wikipedia.org/wiki/OpenAL
http://connect.creativelabs.com/openal/default.aspx
download for bennu
http://code.google.com/p/fenixpack/downloads/list
beta version , sound effects not available ... only 3D effects..
It seems to be very interesting. Can you release the source code to josebita make the linux port ? ;D