You can buy a Raspberry Pi, flash Raspbmc image on it, then add a wifi USB Adapter, Wireless Keyboard-Touchpad, Wireless Speaker, and Remote Control phone app to build your wireless Home Media Center. I’m listing all model/version numbers used in my setup below.
Hardware you may already have
Wireless G Cable Modem – Motorola SBG901 ($50)
http://www.amazon.com/Motorola-SURFboard-Gateway-SBG901-Wireless/dp/B002M3SJ6U/ref=sr_1_1?ie=UTF8&qid=1379706422&sr=8-1&keywords=sbg901
TV with HDMI – Samsung 32” 1080p LED HDTV ($310)
http://www.amazon.com/Samsung-UN32EH5000-32-Inch-1080p-Black/dp/B0071O4ETQ/ref=sr_1_cc_1?s=aps&ie=UTF8&qid=1364835946&sr=1-1-catcorr&keywords=samsung+1080p+led+hdtv
TV Stand ($50)
http://www.amazon.com/gp/product/B002HWR598/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Required Hardware
Rasberrry Pi Model B or newer ($35 computer)
http://www.raspberrypi.org/
Rasberry Pi Case ($13)
http://www.amazon.com/gp/product/B009NKNDVG/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1
USB Power Adapter – Adafruit 5.25V 1A ($10)
http://www.adafruit.com/blog/2012/07/11/the-best-power-supply-for-the-raspberry-pi-is-from-adafruit/
SD Card 4 GB min. ($6)
http://www.amazon.com/gp/product/B0037FLUYU/ref=oh_details_o05_s00_i01?ie=UTF8&psc=1
Mini Wireless Keyboard with Touchpad – Favi ($27)
http://www.amazon.com/gp/product/B003UE52ME/ref=oh_details_o01_s00_i02?ie=UTF8&psc=1
Wireless USB Adapter – Edimax ($11)
http://www.amazon.com/gp/product/B003MTTJOY/ref=as_li_ss_tl?ie=UTF8&psc=1
Optional Hardware
Bluetooth Transmitter – Miccus ($60)
http://www.amazon.com/Miccus-Home-RTX-Bluetooth-Transmitter/dp/B00713RSE0/ref=sr_1_2?s=electronics&ie=UTF8&qid=1379704536&sr=1-2&keywords=bluetooth+transmitter
Bluetooth Speaker – JBL ($100)
http://www.amazon.com/JBL-Wireless-Bluetooth-Speaker-Black/dp/B009AXVM6E/ref=sr_1_1?s=electronics&ie=UTF8&qid=1379704628&sr=1-1&keywords=JBL+speaker
NOTE: There’s noticeable latency between the sound that’s received by the bluetooth speaker and one that’s coming from the TV. The bluetooth speaker setup is meant for having wireless and portable sound in an additional room such as study/ kitchen/ bath or for audio while the TV is asleep/ switched off.
Software
RASPBMC Software (free)
http://www.raspbmc.com/
XBMC Remote Control Android Phone App – Yatse (free)
https://play.google.com/store/apps/details?id=org.leetzone.android.yatsewidgetfree&hl=en
MPEG-2 and VC-1 Codecs ($5)
http://www.raspberrypi.com/license-keys/
Raspberry Pi and Raspbmc let you to play local and online content on TV. Watch movies, listen to shows/talks/music, display slideshows, browse and play videos on Youtube, TED and other channels, listen to online streaming radio, view images on Picassa and Flickr, read Dilbert and Garfield cartoon strips, and check the weather forecast.
Yatse enables you to browse local content and online channels on the phone, use the phone as a remote control, and send what’s playing on phone to the TV and/or wireless speaker making it possible to search while watching on the side.
You’ll love the wireless home experience just the way I’m loving it.