Think you will find you need to copy the file over to PC then simply rename it. Might be a Windows setting to show the file extension spends on how you have Windows setup at the moment.
Yeah i've already done that mate, VLC player plays the .ts file without any problem. Using freemake at the moment to convert an hour long file 2gb to DVD quality 700mb to see how long it takes & what the quality is like. Then i'll try WinX HD Video Converter Deluxe to do the same thing & compare the two.
Freemake converted 2.9gb .ts file in 2hr 25mins converting to DVD Quality output file 825mb mkv file. I'm happy with the quality below is a snapshot taken from vlc