ROKU XD volume problem (1 Viewer)

[Toycrusier]

I
have a Harmony 890 remote. I bought a ROKU XD and am trying to figure out how to
adjust the volume when using to ROKU. The ROKU is hooked up to my [COLOR= darkgreen]Sony[/COLOR] STR-DG920 receiver via HDMI
Cable. The ROKU is hooked up to Video 1 Everything
else is working except the volume. I'm not very teck savy so let me know in
layman's terms please .. Thanks

 

[Toycrusier]

Now I have hooked the ROKU up to DVD IN via HDMI, but still have no control of the volume. When we are using the ROKU the volume can be controled by using the DIRECTV remote , but still not the Harmony.