Machinae Supremacy!

an interesting band from Sweden, Machinae Supremacy employ the use of a Commodore 64 SID chip to fuse electronics with power metal, and top it off with anime and video game-inspired imagery and lyrics.

while not everything they've released is free, they do have a handful of albums available that you can download in either 192kbps MP3 or FLAC format - one full-length, Deus Ex Machinae, as well as three compilations of demos, promotional tracks, and re-recordings: Origin, Arcade, and Fury (unfortunately, when you download the latter three and throw them into whatever media player library you use, they're completely unorganized and jumbled up).

those who are curious and wish to check out a couple tracks, I recommending looking up the songs "Origin", "Winterstorm" (which is currently serving as the intro music for the Yogscast Top 5 videos), and the instrumental "Hybrid".

UPDATE: I've converted the albums from FLAC to 320kbps MP3 format, which is higher quality than the MP3s they currently offer to download, and I have also sorted and organized the albums with the proper information and good-quality embedded artwork. if anyone is interested in downloading these MP3s instead, PM me and we'll work out a way for me to get them to you.

UPDATE & BUMP 06/20/13: I've once again converted the albums, this time from FLAC to VBR MP3s encoded with LAME, providing for high quality sound as well as smaller filesize. as I used LAME (considered the best MP3 encoder available) rather than the generic, built-in encoder I had previously used for the FLAC-to-320 conversion, the sound quality is audibly better than before. I may find a place where I can host a .zip file of these albums and link it here for those interested.