I personally would really like to hear more of what other SA Forum members are doing musically but the question came up about where to upload stuff.
Some are fortunate enough to have space available but for many I'm sure this is a stumbling block, especially if you're on dial-up as that pretty much rules out myspace etc.
There is a movement that has more to do with licensing material than providing free hosting and is more suited to mashup artists, but music is music and the marketing of it is all changing right now so here are a few links to check out .
The SA branch
which also mentions
As a test, I put a little loop on the mixter site, right clicking it gives me an link I can paste anywhere to download.
Hope this helps someone a bit.