Wiardgroup

http://www.dolby.com/digital/lcddpem.html



http://www.5dot1.com/equipment/ac-3_and_dts_software_encoders.html 


These locations have links to many of the companies that make encoding
software.

(The one I use is the Kind Of Loud Technologies SmartCode Pro DTS-CD,
which allows you to DTS encode a 5.1 mix, and then burn it on a CD,
rather than a DVD.  The CD plays on most DVD players).


Gary