diff --git a/exp/audio/audio.go b/exp/audio/audio.go
index 9becf0bfa..c93cfcfaf 100644
--- a/exp/audio/audio.go
+++ b/exp/audio/audio.go
@@ -16,8 +16,6 @@ package audio
 
 import (
 	"io"
-
-	"github.com/hajimehoshi/ebiten/internal/audio"
 )
 
 type Player struct {
@@ -41,5 +39,5 @@ func NewPlayer(src io.ReadSeeker, sampleRate int) *Player {
 }
 
 func (p *Player) Play() error {
-	return audio.Play(p.src, p.sampleRate)
+	return play(p.src, p.sampleRate)
 }
diff --git a/internal/audio/audio_js.go b/exp/audio/audio_js.go
similarity index 100%
rename from internal/audio/audio_js.go
rename to exp/audio/audio_js.go
diff --git a/internal/audio/audio_openal.go b/exp/audio/audio_openal.go
similarity index 100%
rename from internal/audio/audio_openal.go
rename to exp/audio/audio_openal.go
diff --git a/internal/audio/audio_windows.go b/exp/audio/audio_windows.go
similarity index 100%
rename from internal/audio/audio_windows.go
rename to exp/audio/audio_windows.go
diff --git a/internal/audio/audio.go b/internal/audio/audio.go
deleted file mode 100644
index a4f53ada6..000000000
--- a/internal/audio/audio.go
+++ /dev/null
@@ -1,23 +0,0 @@
-// Copyright 2015 Hajime Hoshi
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package audio
-
-import (
-	"io"
-)
-
-func Play(src io.ReadSeeker, sampleRate int) error {
-	return play(src, sampleRate)
-}