Bandcamp (https://bandcamp.com) provides DRM-free MP3 downloads, as does Amazon Digital Music (https://www.amazon.com/MP3-Music-Download/).
Edit: If you want to follow what's advocated by https://news.ycombinator.com/item?id=31386108, you can go here too: http://www.5z8.info/ninjastaroutlet_z8a6ci_toosexyfortv.mov :)