Hi John,
The LEs come program for start address 1
You can leave it there or program it with the on board buttons (very easy and quick) or the Lynx Config program (also easy)
Bill's video is more for Freestyle, MR-16, SSR4-DMX controllers
Of course you can just connect the dongle to the LE and play with Vixen to change the lights (on/off/dimming) without setting any start address by using channels 1-16 in Vixen.
btw: Link the Lynx Express Config program is in the wiki
Rick R.