This is really upsetting me now, tried various things and got nowhere. I throw it open to the panel as you've all been v helpful in the past... I have an old PIII computer running Win98, with a Hercules Game Theater soundcard (comes with a little rack unit). When I try and record on Sonar the playback of input is delayed by a second which makes it unusable. If I try and record a track over whilst playing back an existing one, the timing goes to pot and drops out and all sorts. I believe it's some kind of i/o problem, but I'm at a loss coz this soundcard isn't rubbish and worked perfectly well on my previous, lower-spec, computer. Any suggestions gratefully received.