The problem is not with the extension but VOB files themselves (I'm guessing) . The problem DVDs were created with old Sonic MYDVD06 and RecordNow7.
ALL DVD's play on my TV DVD, but the OLD DVD's won't play on my computer w/ VLC software. When I rename the old VOB files to .mpg I can play them perfecting with Windows Media Player. The files have a problem in VideoWave , but as you can see from my last post they can only be displayed in MYDVD.
Right now I can cast ALL video files to my FireTV which is what I wanted to do. So technically I am satisfied at this point.
If I could find another software to convert the renamed files to a true .mpg I might be able to edit or update them in VideoWave?