That's right. Certain soundcards/audio drivers require you to adjust latency (aka ";audio buffer";) via the hardware's primary controller software. Look in your Control Panels, and check for your M-Audio Delta control. Or, oftentimes you'll see an ";ASIO Config"; button near the latency slider in VDL, which should be a shortcut to opening this interface.
I am again having problems with playback. When I open virtual drumline, I've set the audio as suggested. However, I cannot set the latency. It is blank and I've been unable to do anything with it. Is that the problem? Also, I am not able to set the routing. Nothing scrolls down. It stays at ";not connected";. I thought I had this working, but now I am back to square one. [/quote]
You've probably already figured this out, but there is no need to adjust anything in the [i]routing[/i] section of the VDL setup window. Just ignore this section.