Last week I played back an mp4 using vlc to find I had no audio. Researched this, quite a lot out there, quite a few fixes, nothing worked. 
 
Meanwhile, sonar, vegas and sound forge all had sound. 
 
The fix seems to be completely uninstalling the driver then reinstalling it. Sometimes it works right away, other times requires a reboot.  
 
Don't know if this is win10 related… yes I do, as the m-audio driver hasn't been updated since 2009.
 
Have I reached the end of the road with this device, time for a focusrite 6i6, or is it something that can be tweaked? 

last week i tried to play an mp4 in VLC, only to find i had no audio. did the research... nothing worked. tried a different player. same thing.
 
i have the nvidia hdaudio driver disabled. only way to deal with it as win10 continues to try to install it.
 
anyway, the fix is to completely uninstall and reinstall the m-audio driver, which has not been updated since 2009, and won't be as the product is legacy. sometimes works right away, sometimes requires a reboot.
 
my question: is there something i'm missing, some tweak i can make to win10? or is it time to get a focusrite 6i6?
 
Edit: Sorry for the double post, my tablet gave an error message but apparently posted it anyway.

When I installed Win10 it messed up my FW, everything I have needs the legacy driver. The Win10 upgrade un-installed the legacy driver. Once I got that dealt with everything started working again.

Since they contain slightly different information, I merge the two threads.

are you saying the legacy windows firewire driver? if so, where did you get it? thanks.

thanks, scook

Yes, the legacy windows drivers, downloaded them from Microsoft's web site. I don't have a link.

https://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_devices/windows-10-and-ieee-1394-firewire-legacy-drivers/27ae7f1b-c307-4159-802e-61a123d0de87?page=1

There might be something useful in that thread.

ok, so i installed the 1394 driver and all was well. for a while.
 
Going back about ten days and beyond, i could always open any mp3, mp4, wav... file in VLC and it would play, regardless of what the current sample rate was set to. in other words, if the adapter was set to 48, VLC would still play a 44 file, and vice-versa. it was seamless. i guess VLC reset the adapter.
 
now, after win10 updates and maybe some sonar code(?) VLC will only play a file with the sample rate the adapter is set to. if the adapter is set to 44, VLC won't play a 48 song until i close VLC, change the adapter to 48, then reopen VLC. didn't used to be that way. now VLC can no longer reset the adapter.
 
imho in win10 MS is doing their best to totally phase out legacy HW like firewire audio and video gear. they've changed something recently that makes a 2009 driver quit or lose functionality. that's progress in redmond, what worked last week no longer does...
 
i guess i'll put up with this for a bit and eventually get a focusrite 6i6. but i'm wondering if MS has a nasty surprise for us down the road when they do the same thing to usb2.0...