I just purchased a new computer, a quad-core AMD A8, w/4GB RAM and 64-bit Windows 7. I upgraded from BIAB 2009.5 t0 BIAB 2012, installed from my discs and all seemed well. But when I opened a BIAB tune in RB I sometimes get various buzzes during playback. These are not electrical buzzes but rather data buzzes at different frequencies. Sometimes I make it through playback with only one episode, sometimes it happens continually. Any ideas as to what could cause this? ASIO drivers? Do I need different drivers for the 64-bit version of Windows? I'm only using 3 tracks with no plug-ins. Any help will be greatly appreciated!

Chuck