Since I did not see this in the FAQ or Forums, I am posting this here hoping it may help others in the future…
To discover the Global Cache devices on wireless with newer revisions (I think rev-e up but not 100% sure) of the Actiontec router, you need to disable the IGMP proxy…but on new firmwares of at least my Rev-I model, they removed the link to the screen to do this…
Apparently you can still disable it however - based on the info at the end of this post: http://forums.verizon.com/t5/FiOS-Internet/DLNA-Not-working-on-MI424WR-Rev-I/td-p/505603
SO if you need to take care of this, point your browser to your-firewall-ip/index.cgi?active_page=6059
Hope this helps someone…
Roomie team - would it be possible to allow manual entry of IP/Port for the GlobalCache to avoid this issue entirely?