I am honestly extremely confused with this system, is it a cryptocurrency in which you can buy songs and site features with? Or Is it a way to reward activity on the site?
Currently there is no official idea about the songs. These are as I said only a virtual currency that you can then see on the profile how much you have earned through activity in the forum.
This currency can then be exchanged for virtual items on the marketplace. Or you can just sell your earned dollars in the forum on the marketplace for bitcoins for example. We could realize something like that for the forum as well.
I had the experience in some forums that such a virtual currency in the forum itself eventually gets a value, because it simply becomes valuable. That's why the user experience increases.