Int
(Fn [Int] Bool)
(Fn [] (Ptr CChar))
(Fn [Int] (Ptr CChar))
(Fn [Int] Int)
(Fn [(Ptr CChar)] (Ptr Mix_Music))
(Fn [(Ptr CChar)] (Ptr Mix_Chunk))
(Fn [] Int)
(ok? error-code)
(Fn [Int, Int, Int, Int] Int)
(Fn [Int, (Ptr Mix_Chunk), Int] Int)
(Fn [(Ptr Mix_Music), Int] Int)
(Fn [] ())
(valid-channel? ch)
