http://www.newgrounds.com/audio/listen/123997
(Not made by me, sent the link elsewhere)
A very trancey danceable remix of Sky Sanctuary, Panic Puppet, Ice Cap, and Diamond Dust Zones from various 16-bit Sonic the Hedgehog games, namely Sonic 3 & Knuckles and Sonic 3D Blast: Flickies Island.
You might want to check out Sonic Megamix II as well:
http://www.newgrounds.com/audio/listen/159132
(Again, not made by me, stumbled across the link)
Another Sonic the Hedgehog "Rave Mix", this time consisting of: Gene Gadget Act 1 (Sonic 3D Blast), Doomsday Zone (Sonic 3 & Knuckles) Chemical Plant (Sonic the Hedgehog 2), Lava Reef Act 1/2 (Sonic 3 & Knuckles)
nice songs :) Thanks for sharing