How can I play AMR from file or descriptor?

Hi everybody,

I have been trying to solve the problem "how to play amr".

I used CMdaRecorderUtility class for this purpose. I did the following:

//Constant declarations

_LIT(KAmrFile,"\\system\\apps\\AudioPlayer\\sample.amr");
const TUid KMMFExControllerUID = {0x101F5022};
const TUid KMMFExDesFormatUID = {0x101FAF66};
const TUint32 KMMFFourCCCodeAMR = 0x524d4120;

void OpenAmrFile()
{
if(iMdaAudioRecorderUtility->State()==iMdaAudioRecorderUtility->ENotReady)
{
    iMdaAudioRecorderUtility->OpenFileL(KAmrFile,KMMFExControllerUID,                  KMMFExControllerUID,KMMFExDesFormatUID,KMMFFourCCCodeAMR);
}
}

//It does not get the EOpen state, so state is not opened here which should be opened.
void CAudioPlayerEngine::MoscoStateChangeEvent(CBase* aObject, TInt aPreviousState, TInt aCurrentState, TInt aErrorCode)
{
//So I can not use any checking condition
PlayL();
}

void PlayL()
{
    // Play through the device speaker
    iMdaAudioRecorderUtility->SetAudioDeviceMode(CMdaAudioRecorderUtility::ELocal);

    // Set maximum volume for playback
    iMdaAudioRecorderUtility->SetVolume(iMdaAudioRecorderUtility->MaxVolume());

    // Set the playback position to the start of the file
    iMdaAudioRecorderUtility->SetPosition(TTimeIntervalMicroSeconds(0));
    //

    iMdaAudioRecorderUtility->PlayL();
}

//** I get error message "Feature not supported" for PlayL()
iMdaAudioRecorderUtility->PlayL();

I would really appreciate, if anybody comments on this.