The lights are on, but you're not home:

According to Joan Walsh at Salon:

[Bill Clinton] left the stage to U2's "Beautiful Day," which then strangely segued into Robert Palmer's "Addicted to Love" — although the band cut off the refrain but the crowd shouted out the line they dropped: "You might as well face that you're addicted to love."

This calls for the 12" remix:

Let the healing begin.

(HT: Jim Chen)

UPDATE: CSPAN captures the precise moment of addictus interruptus:

Apparently, somebody at the convention noticed the problem and abruptly pulled the plug on the sound, but couldn't stop the audience from continuing the song.