> P. P. S.  The usb audio use of offsets is not as bad as it first sounds.
> The device consumes written data at a constant rate (say, 176,400
> bytes per second for CD audio).  You can make a noise ten seconds
> from now by writing 1.7MB bytes of zeros (silence) followed by your
> sound data.  Being able to seek ahead 1.7MB instead just avoids the
> need to write the zeros.  The file offset is still bytes, not nanoseconds.  
> 

why not put the timing information inband?  this would allow the timed
sound to be saved to a file also without 1.7mb of zeros.

- erik

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