Okey doke, bumping the ancient thread because I am still utilizing ancient software! heh.
Sorry Gordon, Sony Sound Forge Mac only works on two channel stereo.
BUT I just figured out a performance tip which makes it work like it ought to, where I've had some problems in the past few years that it was really sluggish.
Today I was browsing the settings and options and found that if I turn off OPTIONS > SNAPPING > ENABLE then the program is SUPER quick again, and not at all sluggish like it's been for me.
WHEW!