I love Feliz Navidad as well!
Actually, the DVD "The Magic of Christmas at Walt Disney World" sold at the parks during the Holidays has a complete walk-through of the entire Osborne Light Display as a bonus feature! You can watch it from four angles (front, back, left, and right), plus a "directors cut" switching between the various angles, plus crowd and aerial shots.
This is an awesome, thorough clip of the visuals of the entire display. However, it was filmed before the lights started dancing and it doesn't have the entire music loop. The audio is intrumentals from Nutcracker and "We Wish You A Merry Christmas" that I don't think are actually part of the loop. There are two additional audio tracks - one is a commentary by a Disney Cast Member who is involved with production of the display, and the other is a commentary by the Osborne Family themselves!
You can find clips of the lights dancing on YouTube, however:
http://www.youtube.com/results?search_query=osborne+lights