The original Quake 2 sources as originally released under the GPL license on December 21, 2001.

irix/cd_irix.c

@@ -0,0 +1,40 @@
+#include <sys/types.h>
+#include <cdaudio.h>
+
+#include "../client/client.h"
+
+void CDAudio_Play(int track, qboolean looping)
+{
+        Com_Printf("XXX - CDAudio_Play %i (%i)\n", track, looping);
+}
+
+
+void CDAudio_Stop(void)
+{
+        Com_Printf("XXX - CDAudio_Stop\n");
+}
+
+
+void CDAudio_Resume(void)
+{
+        Com_Printf("XXX - CDAudio_Resume\n");
+}
+
+
+void CDAudio_Update(void)
+{
+/*         Com_Printf("XXX - CDAudio_Update\n"); */
+}
+
+
+int CDAudio_Init(void)
+{
+        Com_Printf("XXX - CDAudio_Init\n");
+	return 0;
+}
+
+
+void CDAudio_Shutdown(void)
+{
+        Com_Printf("XXX - CDAudio_Shutdown\n");
+}