I started using n-track after working with cool edit pro for awhile. I like n-track it seems to work better with my sound card but at first I had some real problems. Through trial an error I found that I can only record the way I want to (ie: 1 stereo track at a time- overdubbing) with the ASIO drivers. I know very little about the differences between ASIO and WDM, (what's the other one? MDS?) ... anyway... why only ASIO? and why were those options not available or applicable in Cool Edit Pro? I should just be glad it works and sounds good I guess. Forgive me if this is the wrong place to ask this - but if anyone here can clarify the differences between these parameters, or point me to a proper resource on this, thanks in advance. I want to understand this stuff.