Britney Spears’ lip-synching Saturday night concert at the House of Blues in Orlando ended in audience boos for the failing pop princess.

“It was an ugly scene. The crowd, which had been on her side, started jeering and heckling her. Britney looked absolutely devastated,” a concertgoer dishes to the press.

According to snooping snitches, the CD with Brit’s prerecorded vocals skipped four to five times during her performance of “Do Something.”

“Several people in the audience started booing,” says one of our spies in attendance. “It was not pretty!”

“When the CD started skipping, she turned her back to the audience,” a spywitness tells the press. “Then when it stopped, she turned around with this look on her face like she was gonna puke!!! I really felt bad for her. Then the effin thing started skipping really badly again!!! And then again and again. It was crazy.”

Things then went from bad to worse for Brit:

“Britney was rolling around on the floor dancing when her headset broke.”

One concertgoer claims: “She was rolling on the ground and her face microphone broke and was hanging down at her neck.. and she was embarrassed again!!! So she tried to push it back up and it went up to her forehead… and then back down to her chest. I couldn’t believe with a five second show that the whole effin thing fell apart!! What are the odds of that shit???!!”