Okay, I posted this in the YT comments but it seems to be too buried beneath all the other comments, so I'll post it here.
Ross (and anyone else sending him video game stuff), if you want the rawest, purest video game quality, try Winamp with Chipamp installed on top of it. Chipamp allows you to listen to native soundtrack formats directly for many, many video game consoles, and most of them loop perfectly so the song never has to end. These include:
.nsf** = NES
http://www.zophar.net/music/nsf.html
http://akumunsf.good-evil.net/
http://gilgalad.arc-nova.org/NSF-Archive/
.spc/.rsn** = SNES (Super Nintendo)
http://www.zophar.net/music/spc.html
http://www.emuparadise.me/music/snes.html (Warning: this is kind of a piracy site, so please only stick to this specific section of it for the music, but I recommend its music section as its one of the few sites that has an archive of this stuff. Check its other music sections too.)
.vgz = Sega Genesis
http://www.zophar.net/vgm
http://project2612.org/
.minigsf* = Gameboy Advance
http://www.zophar.net/music/gsf.html
http://www.caitsith2.com/gsf/
.miniusf* = Nintendo 64
http://www.zophar.net/music/usf.html (notice a pattern?)
https://www.hcs64.com/usf/
.minipsf* (also can be .mib) = Playstation 1/2 (.mib tends to be PS2 while .PSF tends to be PS1) []
http://www.zophar.net/utilities/psf.html tzone.org/~llin/psf/
.gbs* = Gameboy/Gameboy Color
http://www.zophar.net/music/gbs.html
http://snesmusic.org/hoot/gbs/ (links are on the right over those weird numbers)
.brstm = Everything else: but this format is special. It's a proprietary Nintendo format that is based around an .ogg that basically makes it loop forever. Tons of these (and I do mean TONS) can be found at http://www.brawlcustommusic.com. I don't recommend BRSTM for everything since it doesn't immediately ensure the highest quality sound from the music you're looking for, but I'm just throwing this one out for.
* = If a format has "mini" in it, odds are a special file will need to be in the same folder for Chipamp to correctly play the format. For example, Castlevania Aria of Sorrow (GBA, therefore minigsf) would probably have "aos.gsflib" or such in the same folder.
** = You need to be a bit careful when finding some of these files if you just want individual songs: Sometimes .nsf and .rsn files are the whole soundtrack rather than being the individual songs. Most .nsf files are like this and I have not found a way to split them up yet without hacky plugin garbage mess. There are other native video game console formats out there, but they always provide the best quality because the music player literally has to emulate the sound chip or whatever to play it, which ensures absolutely NO QUALITY LOSS. I should mention if you can't stand the smell of Winamp (or its plugin extension Chipamp), foobar2000 is an option for some of those formats.