1. Turn autoplay off - NOW.
2. Get rid of the vistor statistic - NOW.
3. Reduce the header size - NOW, I had to do too much scrolling to get to the important stuff.
4. Then, start a blog and newsletter.
I'd actually recommend you ditch whatever you are using for design at the moment (I assume your own HTML coding skills) and install Wordpress on your server. Install a Wordpress theme which follows good design principles. It's much easier and quicker.
Also, if you're looking to sell music, change your contact form. If you give artists the opportunity to seek a free collaboration, they won't buy.
Only a few points which will help you in the long run, but you really need to sort out your website before even move on with marketing. It's basically bad bathroom piping. Until you get the leaks sorted, you're going to continue being flooded - and you don't want that.
Cheers,
Jordan
P.S. You might want to check out my marketing blog for marketing advice,
Internal Affairs. There's also a newsletter you can sign up to for future updates.