But (and this is very true if you are running SONAR or another ASIO app at the same time) your sound card has to let it change the sample rate. If you have a WAV file at one sample rate, to change it you need to use Process->Resample. Msorrels I'm using Sound Forge 9 (not upgrading till it goes 64bit) but I'm not sure what Audio->Advanced you are talking about (there is no top level menu named Audio).