"Any thoughts?"
Are you talking about this site:
http://somnistatic.bandcamp.com/album/in-the-heart-of-the-sun
I do freelance web dev for a company that does SEO... they spend a lot of time and money tweaking up websites, because once you start to measure outcomes you can see what is working and what isn't.
Getting more traffic but fewer "conversions" which is a fancy SEO dude word for whatever you're trying to get people to do with the site (buy some shoes, sign up for an appointment, give you their email address, look at another website) is a very common problem that you can measure on about any website where you have specifc goal.
Now, you can get a lot of traffic, but if you turn off folks for whatever reason (from having poor design to a bad offer) they ain't gonna convert.
I ain't gonna do a line by line crit of your site, but to me, the design is at least one place where you you do better.
The fact that people will decide if they want to listen to your music based on the first 4 seconds they're looking at your page is, to me a really strong reason why I don't even have a site for my music: I don't have time to make something super great, but something half-ass does nothing, either.
I see. I didn't design it... It's a free site.