Have you submitted to the search engines?
Try to submit the site to as many searchengines as you can find. Then it will take some time until the site actually appears. I think your site is very good and when you figure out how to advertise in your country you will do well.
The % that downloads and playes varies from site to site and type of traffic to type of traffic – and I am really not sure about your country. Maybe you will have a better % of players than we do once you get indexed properly.
Go to google and type ” search engine optimization ” in and learn all you can.