Proud of myself, recorded a sound clip, then started swearing at the mac because no websites will allow an MP3 to be hosted that I have accounts with, couldnt convert it but in the end learnt how to use iMovie So may as well post up what I did, at least you can hear the Stillen noise...you need volume down a bit but should hear it suck the air in (most notable on the second rev) and add a bit of menace to the engine