So i have blueray files and they dont plug and play on the new LG tv 3d tv (via usb port)Not SO SMART TV after all

The compressed audio format which is DTS is incompatible with the tv. So i have tried spliting the audio from the MKV file and changing it to AC3 (dolby) and re adding it but had no luck. So anyways I have reverted to converting to a ps3 file but it seems to be loosing the full blue ray quality and now its only hdmi?
Does anyone know how to split just the audio dts and convert to ac3 and still keep the file blueray quality?
Im just about over this 3d tv? So after paying 1400$ for a tv You have to get a 39 dollar movie and then spend 3*79 dollars on glasses and now i cant burn my movie to my extrenal without compressing it or paying 300 dollars on a compatible player play blue-ray player.3d in my eyes is now overated.sending the hardworking middle-class back to 2d.Ill crack these blueray even if it means streaming direct from the computer tower to the LG 3D dumb TV.
3D is doing my fn head in.
SMART tv= utube videos and log into facebook even opertate it with your phone. Well if your that smart why can your read ****en blueray audio ffs?
Yes doggie and guys major headache!!!!!I be honest i don't think its worth the effort and money.
Yours sincerly
Mr Rippedofnpoundedinthebuttforcash Jones