OCRemix.org

Ok, enough politics for now. 

Instead, you should check out the songs at Overclocked Remix. It's a collection of video game songs remixed every which way imaginable. They are stellar. Search by game, then by song in that game. Of course, the Super Mario Bros. section is brimming with really good remixes. I had a Sega back in the day, so the Sonic the Hedgehog 2 collection brings back memories (while also helping me vibe on some really quality music). Some remixes are a miss, but they are few and far between as all submissions are reviewed by a panel of judges before being added. It's all royalty free, too. 

Another quality song to check out would be Chrono Trigger. Hours of good listening there. 

RP