Ordered Chapters MKV via Universal Media Server

I'm trying to get some anime MKVs to play through Universal Media Server, (an offshoot of PS3 Media Server), that use ordered chapters.

I just installed the newest version of CCCP, which apparently does have ffdshow anymore. Currently when I play one of the MKVs in question, the ordered chapters seem to be followed correctly, but I have garbled video and the audio sounds like chipmunks. :p

I'm running Windows 7 Pro 32-bit, and UMS 2.6.5

Edit: I've fixed the video, but I'm still getting chipmunk audio