For the hotfix 321467:
Have noticed that the patch that used to be available (from the old ftp.isu.edu.tw site), and is included in some of the unofficial service packs/updaters, was a slightly older version. The newer version is still up on the MS website, (https://support.microsoft.com/en-us/hotfix/kbhotfix?kbnum=321467)
it is the same as the old patch, but with this additional registry key:
;service key for dmusic.sys
HKLM,"SystemCurrentControlSetServicesClassMEDIA\000x","Enable Q321467",0x00010001,0