Just got a Xacti C6. Works great but get problems transfering the videos.

I tried transfering the files from the Xacti to my PC using the card reader function of the camera and was able to burn them. Problem is, even though they are mpeg4 format, my lexing dvd player does not recognize the files. It only plays on the pc.

Tried buring them using the bundled software, Ulead DVD Movie Factory, and it says that the audio files are not compatible.

How do I transfer the videos?