I have been using a HTPC without issue for many years, attached directly to my Emotiva XMC-2. Recently I have experienced large audio/video sync issues. Nothing on the Windows side helped. Someone on the Emotiva forum suggested the following:
"May I suggest you download JRiver Media Center as a free one month trial (It comes with no tied-software or malware or bloatware and is 100% uninstallable) and enable Windows' WASAPI audio render instead of Direct Sound within JRiver. WASAPI is bit direct (Windows Audio Session API) and has none of the sample rate conversion or mixing of Direct Sound
"Then, by enabling JRiver's WDM Driver as the windows sound device, you can still use the JRiver audio engine to output all PC audio (from Edge, Chrome, Apps) to HDMI or USB using the WDM Driver built into JRiver to divert audio to HDMI/USB via WASAPI"
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I did this, and it worked for one test. Now the JRiver playback device no longer works to play audio. Any ideas?