Youtube has a lot of good DMB stuff to get you primed for the show......Below are some good and unique one's to check out. I'll be going to the show in St. Paul tomorrow, really looking forward to it. Been to many shows, every one is different, but always entertaining.
Carter Beauford GoPro Solo

swoon

:
-Big fan of each band member, but Carter is worth the price of admission by himself.
https://www.youtube.com/watch?v=M9Pb6PF8LXA
2015 Summer Tour Warmup Series (Bunch of good, live songs from past tours):
-Check out acoustic version of Snow Outside with Bela Flec for a cool acoustic song.
https://www.youtube.com/playlist?list=PLOTmY-rTH6lCOcSKjqwIgdYtLZTFmLfCQ
Dave Mathews Driven Documentary:
-lots of interesting stuff about Dave's upgringing, how the band formed and blew up.
https://www.youtube.com/watch?v=54Ey0TtqRIg
Enjoy the show!!