NAB Show 2008 is in full swing, and just in case you haven't heard, here's something worth taking a listen at. DTS has just revealed v1.6 of its DTS-HD Master Audio Suite toolset for Blu-ray Disc and DVD production, which includes "numerous highly anticipated file management features [along with] the public release of Dynamic Automation for DTS Express." The latter is an interactive secondary audio codec for BD, and according to Brian Towne, Senior Vice President and General Manager, Consumer Division, "the latest feature set empowers content creators with the freedom and flexibility to dynamically vary the primary audio volume, which is essential for picture-in-picture, alternate tracks, director commentaries and other interactive features for Blu-ray Disc." Best of all, DTS Express streams encoded for Blu-ray with MAS v1.6 are playable on Profile 2.0 and Profile 1.1 players, and it's available as a free upgrade (right now) for existing customers.