Hi all,

48kHz sample rate is not functional - at least with all iBook2s I have 
access to. The hardware just does 44.1kHz instead. I have cross checking 
the Darwin source - but as far as I have seen it also does not support 
higher rates then 44.1kHz. Strange is, that any bit combination written 
does result in 44.1kHz. Maybe someone with access to the spec can 
implement it correctly - if the hardware does support something different.

Have fun,
  René Rebe