Let's Might Gaine!! Part 2
Not quite lossless, but the best I could find relatively quickly. Missing the Vocal Collection, which I will hunt down somewhere as well.
By the way, this series is just AWESOME. Kudo Takashi's music is excellent, and the story is straightforward but good. I also enjoy the character design.
If someone has lossless OSTs of Might Gaine, please share.