This is for anyone reading this thread who is still having problems with kmixer.sys 
and/or 1000008e BSODs or similar:

My computer recently started having loads of BSODs from kmixer.sys whenever I played 
any audio or video (except Call of Duty for some reason).  Then it started rebooting 
without BSODs and the eventlog showed 1000008e system errors after rebooting.  Very 
frustrating.  Windows Media Player (9 or 10) wouldn't play anything at all, it would 
just crash.  Thought it was XP SP2's kmixer.sys and searched endlessly for solutions 
on the web but to no avail.  I then suspected the RAM so I ran memtest86 and prime95 
(not for more than a few hours though) and nothing came up.  Having worked in computer 
support for years I remembered the old tenet 'go back to basics' so I pulled one 
of my DIMMs out and the computer wouldn't even boot.  Swapped it for the other one 
and it was fine, no more BSODs, not more crashes, could play audio/video perfectly. 
 Bought myself a replacement and everything is good.

FAULTY MEMORY MODULE was the problem!!!  This can be very hard to diagnose as the 
symptoms are often vague and seemingly random.  Suggestion:  If you're getting these 
sorts of errors, random reboots, BSODs from kmixer.sys, lots of random program crashes.... 
try removing your memory cards, use one at a time and see if you can isolate a faulty 
one then CHUCK IT OUT!!

Good luck!

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