All of the Steam soundtracks I’ve bought came in MP3 format, some also in FLAC for good measure. Can’t download it over web though, have to download them with the Steam client. Some games have bonus content that is just slapped in the game folder as MP3s or whatever.
Bonus soundtracks in GOG are also DRM free (of course) and downloadable over web.
All of the Steam soundtracks I’ve bought came in MP3 format, some also in FLAC for good measure. Can’t download it over web though, have to download them with the Steam client. Some games have bonus content that is just slapped in the game folder as MP3s or whatever.
Bonus soundtracks in GOG are also DRM free (of course) and downloadable over web.