People should just cut to the chase and get it on MySpace where it can be heard. I've been in the music scene for years and all that advice about getting gigs, friends and family to promote, putting up flyers works if people had heard the music first.
MySpace is always the first place I check when I hear of a new band in town. If they're good, I'd go to a show. They'd have to be real good, though.
I hate Facebook so I can't in good conscience recommend that place.