Best way to setup some type of network for my stored movies ?

[nightrider1470]

this is my setup in my flat

Room 1 lounge
Projector
Onkyo 906 Av receiver
Powerful HTPC
PS3
Drobo hard drive with 8TB of blueray MKV rips

Room 2 Bedroom
Projector
Denon AV receiver
WD HD live
PS3

Now the drobo device in room 1 has all my movies and stuff on and I would like some easy way of being able to play the files off the drobo device without having to move it - Please bare in my 95% of the data is blueray MKV rips, so I am guessing sharing it via Wifi wont work

Any idea on how I can share all my data from the drobo device, I have lots of hardware but unsure whats the best way to go about it, maybe my HTPC can do something.

 

[nightrider1470]

I can run a cable if needed as its only a small flat and rooms are 15ft apart

 

[nightrider1470]

PS3 ms converts the file though so not the same quality or HD sound like TrueHD