Thanks for all the suggestions... it appears I need a PC up and running with either Plex, Twonky, MyMedia component to access my stuff on the NAS (WD MYBookLive) which simply is a overhead. As I am able to use wd2go on Android smartphone and connect the smartphone via HDMI to my TV , I can do the local streaming from NAS without my PC being up and running. So wile I have already bought a Roku3, I have decided to go for a cheap Android smartphone/tablet that has HDMI and leave that connected to my TVs. Any suggestions on similar devises - as only thing i will use the android devise is for wd2go and HDMI ?
Now , I need to figure out what to use my Roku for other than to watch some free channels.