Thanks for the link, that site is awesome.
Just goes to prove that good music is good music. It doesn't matter what hardware its on, only that the music is good in the first place and that its programmed to use the hardware correctly.
I love hearing Drac X on NES, but so far I'm most impressed with Gyrus on PCE.
This may be old news to most people here, but another great "remix" site is Megadriver (Brazil).
http://www.megadriver.com.br/For the most part, its a one man band doing metal covers of all kinds of classic game music. My favorite is Metal Contra, but close behind is the Alex Kidd medley.
They also collaborated on Metal Mame, so you can play arcade games like Contra and Altered Beast with mp3 metal soundtracks.