GCM2's soundtrack just hit Steam and it's FREE for all owners of the game!
http://store.steampowered.com/app/413720/
Once downloaded through the Steam client, you'll find a folder for the OST in Steam/steamapps/common/Grand Class Melee 2. Let us know if you're having any trouble with the soundtrack or Steam music player or anything. We hope you enjoy!
Prefer to stream? Listen to us on SoundCloud: https://soundcloud.com/gigatross-games