Paramount announced a deal with DTS to use DTS-HD format for its feature home video offerings through UltraViolet. Paramount is the first studio to use the DTS-HD coded for digital delivery. The digital delivery is being used through UltraViolet's common file format (CFF) which is scheduled to launch at the end of this year. CFF guarantees that all Ultraviolet playback devices will be be able to play the content. The deal between Paramount and DTS is non exclusive. I'm not exactly sure how many people use Ultraviolet for a home theater experience, thus even having 5.1 or 7.1 surround sound. I was under the impression that most UV rights were obtained from purchasing a Blu-ray disc and that the majority of use was through portable devices. If that is really the case, does it really matter what codec is being used based on the limitations of portable playback devices? Has anyone used UV in their home theater? If so, what has your experience been? Has anyone purchased a UV title separate from what comes with Blu-ray titles?