diff --git a/libao-ffi.rkt b/libao-ffi.rkt
deleted file mode 100644
index 783f247..0000000
--- a/libao-ffi.rkt
+++ /dev/null
@@ -1,81 +0,0 @@
-#lang racket/base
-
-(require ffi/unsafe
-         ffi/unsafe/define
-         "private/utils.rkt"
-         )
-
-(provide ;_libao_pointer
-         AO-FMT-LITTLE AO-FMT-BIG AO-FMT-NATIVE
-         ao_initialize
-         ao_default_driver_id
-         ao_driver_id
-         ao_open_live
-         ao_play
-         ao_play_ptr
-         ao_close
-         ao_shutdown
-         ao_append_option
-         make-ao_sample_format
-         ao_sample_format-bits
-         ao_sample_format-rate
-         ao_sample_format-channels
-         ao_sample_format-byte_format
-         ao_sample_format-matrix
-         (all-from-out ffi/unsafe)
-         )
-
-
-(define ao_lib (get-lib '("libao") '("5" "4" "3" #f)))
-(define-ffi-definer define-libao ao_lib
-    #:default-make-fail make-not-available)
-
-(define _libao-pointer (_cpointer 'ao_device))
-(define-cstruct _ao_sample_format (
-                                   [bits _int]        ; bits per sample
-                                   [rate _int]        ; samples per second in a single channel
-                                   [channels _int]    ; number of audio channels
-                                   [byte_format _int] ; byte ordering in sample, see "constants" below
-                                   [matrix _pointer]  ; channel input matrix
-                                   ))
-
-(define-cstruct _ao_option (
-                            [key _pointer]
-                            [value _pointer]
-                            [next _pointer]   ; number of audio channels (list)
-                            ))
-
-(define AO-FMT-LITTLE  1)
-(define AO-FMT-BIG     2)
-(define AO-FMT-NATIVE  4)
-
-; void ao_initialize();
-(define-libao ao_initialize (_fun -> _void))
-
-; int ao_default_driver_id();
-(define-libao ao_default_driver_id (_fun -> _int))
-
-; ao_device* ao_open_live(int driver_id, ao_sample_format *format, ao_option *options);
-(define-libao ao_open_live (_fun _int _pointer _pointer -> _libao-pointer)) 
-
-; int ao_play(ao_device *device, char *output_samples, uint_32 num_bytes);
-(define-libao ao_play (_fun _libao-pointer _pointer _uint32 -> _int))
-
-(define ao_play_ptr (get-ffi-obj "ao_play" ao_lib _fpointer
-                                 (λ () (error 'ao_lib "libao does not provide 'ao_play'"))
-                                 ))
-
-; int ao_close(ao_device *device);
-(define-libao ao_close (_fun _libao-pointer -> _int))
-
-; void ao_shutdown();
-(define-libao ao_shutdown (_fun -> _void))
-
-; int ao_append_option(ao_option **options, const char *key, const char *value);
-(define-libao ao_append_option (_fun _pointer _pointer _pointer -> _int))
-
-; int ao_driver_id(char *short_name);
-(define-libao ao_driver_id (_fun _pointer -> _int))
-
-
-