Whoa, did I buy it? I listened to it on MySpace, but I didn't buy it. I wanted to buy a track or two to help out, but I just don't have the means - sad I know - to go for it at the moment.
Chalk that sale up to your efforts, someone enjoyed like I did and even bought it
Do you have a soundclick page and the like?
And hey, I wonder if you have tried
SEO your page? Basically, use google's keyword tool and start digging for long tail buy terms. I'd start with "buy __main keyword of your music__" and keep digging. Say that term a bunch of times on your myspace.
Join music forums, post like crazy, use any chance you can to help musicians and listeners alike by describing a type of music, then say "check _____ track on my page in my sig for an audible example", stuff like that.
Have you seen:
?
I don't know the costs that they run, but it can't be THAT expensive - you can get put on the front page of myspace music with that.