I have a Sony 7.1 AVamp that I always used for 7.1 with PowerDVD successfully. The sony appeared in my sound options list and it would show 7.1 as an ouput option.

In PowerDVD I always had the ability to choose whether to let PowerDVD decode the sound or send nondecoded signal to the Sony amp. It all worked.

I moved and had to disconnect everything. Now it doesnt work

When I play a 7.1 movie powerDVD is only offering to decode the sound itself and the amp is only seeing 2 channels via linear pcm.

I have win10 with a geforce 550ti ultra with latest drivers.

Strangely, when a movie is NOT playing, the option for nondecoded signal appears. As soon as I hit play its gone and I just get two channel sound passed to the amp.

Any suggestions would be appreciated