Short Bursts Of Audio In Cubasis Options

[musicteacher]

I am running OS9.2 and trying to record using Cubasis. I have recently developed a problem where any audio in input into Cubasis using either my USB iMic or the regular external audio jack is only received in short bursts. There is about half a second of audio followed by a second or two of silence and it repeats in a similar but irregular pattern. Now even files I recorded on Cubasis before all of this happened are having this problem when I play them back. What can I do about this?

Thanks.