PDAudio-CF from Core Sound is a Recording System For PDAs, Laptop and Desktop systems. Rather than being a single piece of hardware, PDAudio is a system of inexpensive hardware and software components you can select among to assemble a very compact recorder that meets your needs. The centerpiece of the system is PDAudio-CF, a Type I (extended) Compact Flash S/PDIF interface with optical and coaxial inputs. PDAudio-CF can be mounted in PDA hosts that run Windows CE/Pocket PC 2002 or Linux (such as HP/Compaq’s iPAQ), or used with laptop and desktop computers running Linux, Windows 2000 or Windows XP.