Heh, I remember when the Arena music from the Coliseum mission would do the same thing. It was amusing when I did the mission, then PvP'ed in Kerrat with that music still playing. Kept envisioning Kirk & Spock fighting while I was shooting at people.
Bugs aside it really is fun and festive music that really changes the atmosphere. I especially love that Generations Overture playing in the background, which made me think of the Nexus Christmas theme.
I really hope there is more Trek music to come that adds more of the Trek feeling, like the Klingon Theme playing when fighting.