"Cannot open the audio device.

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http://www.daniweb.com – Another application may be using it." is triggered when I try to play a sound file (wav) when the speakers are connected to either of the audio sockets in the motherboard of the PC. Device Manager shows NO problematicals in Sound and Audio category, but DOES show two entries for Other Devices under Other Devices with a question mark through them. Loading the motherboard driver did not make any difference to those entries, although the USB1.1 ports now appear to have switched inconsistently) to USB2.0, suggesting the driver is the right one. (General)