thanks for all you help guys - seems that the problems I had was - not having a male xlr - rca cable, an incorrect I/O settingas outlined in the above pink fish media forum and not having my stereo amp turned up loud enough (discovered that last night!) - the the volume I initially had it at wasn't that much below the required limit...

just playing with it now - tho the sound is slightly less agressive...not entirely sure thats a good thing!