I'll try to guide you the maze of these formats with both the geek explanations and my own Simple-minds kind of Breakfast Clubby thing...you see, the Simple Minds had a song in that...just read on...
What is DTS?
Digital Theater Systems" - a multi-channel (5.1) digital audio encoding format created by Digital Theater Systems. The DTS format was introduced in theaters in 1993, with Steven Spielberg's blockbuster movie Jurassic Park. The DTS format provides an expanded frequency range over regular cds and are available in stereo and\or multichannel formats. Like DADs, DTS audio discs are designed for use in your dvd player. All DTS discs will play in your dvd player; however, the older dvd players may only reproduce a DTS disc in stereo. If your home theater set-up can replicate surround sound...then you're good to go.
More recently, DTS has adopted the DVD-A format...ie, they play in a dvd player and have visual content. Confused?...read the small type on the back of the disc... DTS has offerings of Eric Clapton, Steve Miller, BTO, Jeff Beck, Queen, the Police and others.