Vista - Using Spacial Audio Software with Windows Vista

Previously I had Windows 2000 and successfully used the Spacial Audio
Software known as SAM3 to DJ at an online radio station. I bought a new Dell
computer and it came with Windows Vista Ultimate installed. I successfully
installed Sam3 on the new computer. When I try to use it the SAM3 plays my
MP3 Files with no trouble. But when I try to use my Microphone I am told
that the Mic output seems to cut in and out. I have run all tests on the mic
that I know to run. it checks out fine and works well with SKYPE. Does
anyone know if SAM3 is compatible with Windows Vista? I have checked the
Tech Support Site at Spacial Audio and they have only very vague answers.
Anyone familiar with this situation?

Thanks