Find out the format of a mixer music.
const Mix_Music *music);Mix_MusicType Mix_GetMusicType(
|music||the music object to query, or NULL for the currently-playing music.|
Returns the Mix_MusicType for the music object.
music is NULL, this will query the currently playing music (and return MUS_NONE if nothing is currently playing).
This function is available since SDL_mixer 2.0.0