OC Remix is a site with tons of great video game remixes by independent artists, from old game nostalgic feels to later games with creative dubstub or techno-dance twist on the ost; console games, arcade, or pc.
However the part that sucks is that all the download links are tucked in individual download pages. First you have to click the link, then the download tab, and then you can finally download. They do make a torrent of all their songs, but I don’t think it’s been updated since 2012.
This small script (Firefox: Greasemonkey, Chrome: Tampermonkey) places all the download links, right next to the songs in the list. Each song usually has four mirrors, because they use mirrors to divvy up the server load.