Made file_name attribute of audio recording notifications more consistent

darcs-hash:20090312143803-58103-cec9466c5a21fb4346dcca63d6736a06dffda336
Make SCSessiongotStreamProposal notification data attributes consistent

darcs-hash:20090312152017-58103-a6cd3aa28416cd4e81654a556a19ff6b95b813ae