AudioToolbox Changes AudioToolbox AudioConverter.h Added kAudioConverterErr_NoHardwarePermission (no architecture available) AudioFile.h Added kAudioFileM4BType AudioFormat.h Added kAudioFormatProperty_AreChannelLayoutsEquivalent Added kAudioFormatProperty_FormatIsEncrypted AudioQueue.h Added AudioQueueProcessingTapGetQueueTime() Added kAudioQueueErr_InvalidTapType Added kAudioQueueErr_RecordUnderrun Added kAudioQueueProperty_ConverterError