Here's a puzzler for you puzzle fans. I have a Firewire audio interface that I use for everything except Windows sounds and speech output. When I start Windows XP, the Windows sounds come through the default audio device, an SB Audigy sound card, but sometimes, not always. After the system startup is complete and things have settled down, I manually remove some registry keys for ASIO support of the SB card because they conflict and interfere with those of the Firewire device, a Mackie 820I mixer. Sometimes when I switch on the Firewire interface, the Windows sounds switch to that interface of their own accord, and sometimes they don't. I will know instantly whether the switch has happened if I don't hear the sound for "A USB or Firewire device has been connected" because I normally turn the Mackie on with all its volumes down, thus not allowing any sound to come through, particularly feedback from a microphone. I can usually get them to stay put on the Audigy SB card by turning the Firewire interface off, waiting a few seconds to hear the Windows sound indicating a Firewire or USB device has been disconnected after the Windows sounds have magically moved back to the Audigy, then turning the Firewire device back on. Sometimes it takes two or three tries to get the Windows sounds to stay put on the SB, sometimes they never move at all. Any clue as to why this happens in the first place, and possibly how to prevent it from happening?
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