Anyone know more about the details of this (kind of looks like an ogg or avi wrapper for audio) audio format and whether we can interoperate with it ? . Core Audio Format is the latest addition to the . dozens of audio formats supported natively in Mac . OS X. Developed by Apple, Core Audio Format (CAF) . combines virtually infinite capacity with rich . support for metadata in an optimized-for-audio . package. As a 64-bit file format, you can record . a thousand channels of audio for a thousand years . in a single file. And it can store any audio data, . whether uncompressed PCM or compressed such as AAC. . Application support for these files is available . today in QuickTime 7. http://www.apple.com/macosx/features/coreaudio/ --markc