diff --git a/libs/pyglet/media/codecs/base.py b/libs/pyglet/media/codecs/base.py
index d65b23a..652a8a8 100644
--- a/libs/pyglet/media/codecs/base.py
+++ b/libs/pyglet/media/codecs/base.py
@@ -135,17 +135,6 @@ class AudioData:
         self.duration -= num_bytes / audio_format.bytes_per_second
         self.timestamp += num_bytes / audio_format.bytes_per_second
 
-    def get_string_data(self):
-        """Return data as a bytestring.
-
-        Returns:
-            bytes: Data as a (byte)string.
-        """
-        if self.data is None:
-            return b''
-
-        return memoryview(self.data).tobytes()[:self.length]
-
 
 class SourceInfo:
     """Source metadata information.
@@ -409,7 +398,7 @@ class StaticSource(Source):
             audio_data = source.get_audio_data(buffer_size)
             if not audio_data:
                 break
-            data.write(audio_data.get_string_data())
+            data.write(audio_data.data)
         self._data = data.getvalue()
 
         self._duration = len(self._data) / self.audio_format.bytes_per_second