I think there are three factors at work here. Ms made two changes in the Dec13 that directly affect us - a change in timing that exposed old cw code that needs to be updated - and a change in the way windows communicates with audio drivers.
Three weeks ago I could play an mp3 or mp4 in Vlc. Didn't matter what sample rate the adapter was set to at the time, it reset the adapter to the clip's rate, played the clip, then reset the adapter to what it was on exit. Now, if the adapter is not set correctly for the clip, I get no audio. I can pause playback, open the adapter control panel, reset it, return to vlc and unpause, now I have audio.
I know there is a driver issue because vegas has crashed frequently lately, and when I close the crash window, I see the speaker icon with a red line through it saying no audio device available. In the middle of a video session. If I uninstall the reinstall the audio driver alls well for a while…
I've also seen on other forums that ms uninstalls legacy 1394 firewire drivers as part of updates. I now keep the legacy 1394 driver on the desktop to reinstall whenever ms has removed it…
I was going to update my m-audio firewire 1814 to an m-audio express after the holiday. Now I'll wait until cw chimes in again.