it might be with it,
THX isnt the audio card's property, its the Speakers property, thats why creative Inspire (supporting Dolby and ETS) is cheape than Mega/GigaWorks (supporting all + THX).
and the Value card comes boxed? as if it does, then it must have the digital Audio cable in it. and game port comes extra, as came both with my Audigy 2 ZS, but i am not using any of the two.