There are more than a few little reminders...
For instance, in the mini-series, as Roslyn is waiting for the doctor, during the scene through the window, you'll see a Firefly pass through. Not surprising that happened, or the fact that BSG has the same "feel" in many cases to Firefly, since the same effects house did both shows. And you're right... The music in tonight's episode sounded A LOT like the music in the Firefly episode "Safe."
Mark
did not know that