Can we come back to Cubase in a minute Kara.

1) Can you tell me when you were installing did you do the Check You Can Hear Sound check as described on P8 of the Getting Started Manual. Was there clicking and popping then. I'm trying to see if the problem is your Cubase setup rather than the Edirol setup.

2) In Cubase what drivers are you using - should be on the same device manager in Cubase I think.

3) I don't have Cubase but I have an old version of Cubasis VST that I don't use but is on my machine. That's set up to use ASIO drivers and appears to be set at 5 buffers of ~5500 samples (~11k for 16 bit audio which it's set for) for Input and 5 similar buffers for output.

Mick