MKV & DTS connectivity

Hi there! I have a question:
I have an MKV video file 720p and i have a DTS from another video (both videos are the same movie). i want to insert the DTS file to the MKV file since the video file doesnt contains the English language.
How do i change the DTS’s frames to fit the MKV video file. And how do i insert it? (what software).
thanks! [=

It’s much better you do it from the original.