I second soundcloud. Also, you can try to just do a radio set with Spotify by typing in a genre or specific artist and just let it play. You can do this with a paid Spotify account, or if you don't want to buy a subscription, Spotify and Pandora both have free versions (you just get interrupted by commercials which is a drag when you are caught up in the dance moment). I will also put a link of my soundcloud account so you can check out my music and artists I follow- https://soundcloud.com/spin-gypsy. I mainly listen to electronic music, but I do have some folk, reggae, and jam music in there (if you can find it haha). If you like electronic music, some of my faves right now are Gramatik (he gives his music away for free!!), Ill-esha, Goosebumps, Alice Spacedoll, An-ten-nae, The Apnea, Big Gigantic, and Elfkowitz. I can name great music all day, but like I said, it's mainly electronics. Oh, but, I've been into dancing to Rebelution, Tribal Seeds, and Iration a bunch lately; they are great reggae rock type bands.