Thank you for your prompt and detailed replies. I followed your instructions, but not knowing my way around MPEG Streamclip I inadvertently saved the ts's as MPEG-1 files. I burned the DVD and the result was basically a choppy mess and a shinny new coaster! I'm in the process of saving the ts's again, but this time as MPEG-4s. I'll let you know the result.
Again, thanks for your time and detailed replies.
I'm sure new problems will surface; now I know where to look.