Got this to work on an ALC272 on Win 7 64. Solution isn't very pretty but it works. Here's how I did it:
1. Install 2.71 drivers from this site
2. Restart
3. Run stop commands from batch file on Page 3:
taskkill /f /im RAVCpl64.exe
net stop audiosrv
net stop AudioEndpointBuilder
4. Rename original DLL and replace (make sure its the DLL version and not the SYS one)
5. Run start commands from batch file on Page 3:
net start AudioEndpointBuilder
net start audiosrv
CD /D "C:\Program Files\Realtek\Audio\HDA"
start RAVCpl64.exe -s
6. Set output to DTS Connect or DD Live in Realtek Manager
7. Run stop commands from batch file on Page 3
8. Delete (or rename) modified DLL and restore original
9. Run start commands from batch file on Page 3
1. Install 2.71 drivers from this site
2. Restart
3. Run stop commands from batch file on Page 3:
taskkill /f /im RAVCpl64.exe
net stop audiosrv
net stop AudioEndpointBuilder
4. Rename original DLL and replace (make sure its the DLL version and not the SYS one)
5. Run start commands from batch file on Page 3:
net start AudioEndpointBuilder
net start audiosrv
CD /D "C:\Program Files\Realtek\Audio\HDA"
start RAVCpl64.exe -s
6. Set output to DTS Connect or DD Live in Realtek Manager
7. Run stop commands from batch file on Page 3
8. Delete (or rename) modified DLL and restore original
9. Run start commands from batch file on Page 3