Is the trial a full functions or are there limitations or watermarks on the final product?

Hello.  I am trying to burn some halloween video files to a dvd.  They are from AtmosFX.  It was their suggestion to try your free trial and burn my videos.  I have opened the files and they are not showing from your program.  I went down the list trying the different formats and had no success.  I also tried dragging and dropping, but all I got was a circle with a line through it.  Any suggestions would be greatly appreciated.  Thank you for your time.