Hey guys, flame here. Recently discovered this cool thing, where you override a soundfile by C418 to put your own music on Minecraft! That way, when some guy's listening to 13, you're listening to Deadmau5!
1. Convert your music to OGG format.
2. Put your OGG file in the streaming folder, found in resources in the .minecraft folder.
3. Rename the OGG file to the .mus file you would like to replace.
4. Start your game; enjoy your new custom records!