diff --git a/src/audio/pspaudio.h b/src/audio/pspaudio.h
index 54344147..4edd3529 100644
--- a/src/audio/pspaudio.h
+++ b/src/audio/pspaudio.h
@@ -33,6 +33,20 @@ extern "C" {
 
 /** Used to request the next available hardware channel. */
 #define PSP_AUDIO_NEXT_CHANNEL  (-1)
+  
+/** Error codes used as return values for the Audio Driver. */
+#define SCE_AUDIO_ERROR_NOT_INITIALIZED (0x80260001)
+#define SCE_AUDIO_ERROR_OUTPUT_BUSY (0x80260002)
+#define SCE_AUDIO_ERROR_INVALID_CH (0x80260003)
+#define SCE_AUDIO_ERROR_PRIV_REQUIRED (0x80260004)
+#define SCE_AUDIO_ERROR_NOT_FOUND (0x80260005)
+#define SCE_AUDIO_ERROR_INVALID_SIZE (0x80260006)
+#define SCE_AUDIO_ERROR_INVALID_FORMAT (0x80260007)
+#define SCE_AUDIO_ERROR_NOT_RESERVED (0x80260008)
+#define SCE_AUDIO_ERROR_NOT_OUTPUT (0x80260009)
+#define SCE_AUDIO_ERROR_INVALID_FREQUENCY (0x8026000A)
+#define SCE_AUDIO_ERROR_INVALID_VOLUME (0x8026000B)
+#define SCE_AUDIO_ERROR_INPUT_BUSY (0x80260010)
 
 enum PspAudioFormats
 {