Roku and Autosensing Component / Digital Audio Switch

Anyone using the Roku with an autosensing component video / digital audio 
switcher? I am using it with an Audio Authority 1154 and having a weird 
problem. Every 15 minutes or so the roku sends out a signal over the component 
video and / or digital audio connection which triggers the audio authority to 
switch the channel the roku is on for a split second, interupting whatever else 
I am watching. The roku's power is off. I know there are some device out there 
that do this (some cable, ota and sattelite receivers), is there anyway to stop 
the roku from sending out this signal? I don't want to use the roku to switch 
the component video, since it doesn't pass through digital audio (just has 
connectors for analog audio). Is there anyone from Roku that can comment on 
this? I know you guys did a special test on the B&K Ref 50, perhaps you can 
contact Audio Authority and ask them for test unit. I hope there is some way 
around this, because I really like the auto switching capability. Thanks!