Plays data in the buffer at the current volume. The client should fill the buffer with audio data before calling this function. The observer gets a reference to the buffer along with the callback function BufferToBeFilled(). When playing of the audio sample is complete, successfully or otherwise, the function PlayError() on the observer is called. The last buffer of the audio stream being played should have the last buffer flag set using CMMFBuffer::SetLastBuffer(TBool). If a subsequent attempt to play the clip is made, this flag will need resetting by the client.

Post open - called following successful open to complete open process. Allows async opening

Contine the process of recording. Once the buffer is filled with recorded data, the Observer gets a reference to the buffer along with the callback function BufferToBeEmptied(). After processing the buffer (copying over to a different buffer or writing to file) the client should call this function to continue the recording process.