The internet is not restricted to nerds anymore. Sure, your average musician isn't likely to get a mention on Slashdot, but there are about a zillion different

The internet is not restricted to nerds anymore. Sure, your average musician isn't likely to get a mention on Slashdot, but there are about a zillion different forums/blogs/etc out there covering a zillion different topics, and if your music appeals to even a small subset of them you can get some pretty cheap advertising. And if your music is good, you can start to build off of that.