Peter - and others,

Thanks for responding.

No other programs are open. The card is not locked - other programs have no trouble changing the sample rate on the fly. I have rebooted and only run Band in a Box and still have the problem. Like I said - there is absolutely no problem using the ASIO drivers with RealBand. I don't know what Band in a Box thinks it is sharing the ASIO driver with if that is the case. I have run every other audio program I use successfully using the ASIO drivers - including RealBand. Programs also run include: Sonar X1, Adobe Audition 3.1, Sony Vegas 10, Sound Forge 10, Melodyne Editor, and Melodyne Studio - among others.

There must be some difference between how Band in a Box and RealBand are interfacing with the ASIO drivers. I have compared the settings in the dialog box for selecting the Audio Drivers in both BiaB and RB but do not see any differences. I have used the default settings. This is a clean install on a new computer

Don