Connecting TV and computer with two routers

Connecting TV and computer with two routers

My network is like this today:
A Thomson TG508v2 modem/router connects to the internet and connected to
it we have: - Computer 1 - Computer 2 - An EA6500 router
In the EA6500 router we have: - A TV - A PS3 and we also use it as the
main wifi router for the whole house since it is better positioned and has
a better range than the TG508v2
The thing is, Computer 1 has a DLNA server and i wish to use it from my TV
which as you can notice is connected in another router.
The first answer will probably be: use your EA6500 in bridge mode, but: 1-
I lose a lot of the EA6500 features doing that. 2- For some strange
reason, the internet in the mobile devices (wifi) starts to have some bugs
when i do that, The youtube app takes a lot to load videos (like 2 minutes
just to start buffering) and my sister always has some strange stuff
happening in her iphone/ipad. While using the EA6500 as a router in a
different subnet I don't have those problems.
I also wish that everything could work almost as if there was only one
subnet (everything could ping everything) but without losing the EA6500
features (plugins HDs to it, better network controls than over the
TG580v2, etc....).
The TG580v2 has crappy/none way to configure routes, and the EA6500 has
nat enabled.
Connecting the computers to the EA6500 will be almost impossible
Any suggestions?