Custom Music

[Abion47]

The ones you want predominantly are Music_Play and Music_Stop. You can also use MusicPlay_Ext For playing music with a little more control. The wiki has documentation on these and the other music-related functions, and like WALP said, you can look at the code for various SOMA levels for usage examples.

And yes, I believe the string value you put in the file parameter is the name of the music's .ogg file.