We use CMdaAudioPlayerUtility to play some audio files in N71, only wav, m4a and amr can be played successfully. For mp3 and aac, a KErrNotSupported is returned when opening the file. However those mp3 and aac files can be played successfully in the native sound player without any problem. Is mp3/aac playback supported in all 3rd edition phones without the need of any extra plug-in library?