ref: 0a1b6b4f15da58f47b7a6fcf3b650b8e5c3a7b53
dir: /audio/music/nothing.asm/
Music_Nothing: channel_count 4 channel 1, Music_Nothing_Ch1 channel 2, Music_Nothing_Ch2 channel 3, Music_Nothing_Ch3 channel 4, Music_Nothing_Ch4 Music_Nothing_Ch1: Music_Nothing_Ch2: Music_Nothing_Ch3: Music_Nothing_Ch4: sound_ret