Actually that was the second time the original BSG there was played. The first time was in the pilot. As a nod to the original series, they put a lot of things in the pilot. The old BSG theme music has been adopted as the National Anthem of the Colonies. If you take a close look at the pilot, one of the hangar bays was converted to museum displays. Look closely and you will see the original Colonial Warrior uniforms on display. You will also see a Cyclon from the old series, too. And the Viper on display was from the old series, too. Almost like the elements of the old series now represent the first Cylon war. They did find a way to pay homage to the old series in a very asthetic way.
I saw the old props. Didn't catch the Colonial Anthem though. I really do like how they built the show, basically except for the Cylons no longer being alien in origin they said "OK everything that happened before the original series happened, except the Cyclons actually did sign the treaty and went away". I thought it was a really good way to build it, gave the old fans a building block to work with.