So moving into a new place and need to do some tricky network re arranging

Upstairs,    PC, file server, and modem (linksys am300) 

downstairs,   Media player, wii, TV.

misc:  a couple of laptops and ios devices

so basically i want to get the media player and tv hooked up to the rest of my stuff upstairs, presently using a belkin n150 router for the lappys and iphones, but i need a bridge to connect the stuff downstairs,

cabling is not an option!

basically i want a 802.11N wireless bridge with 4 ports however i don't want to pay $300+

budget at the moment is $100ish,  so any recommendations of devices for this setup would be great

Cheers

Blair