I imported a 50 min. clip from my camera into the Event Library. It was listed correctly and I could see it in the Event browser. It looked like it always does with the video and audio waveforms together. I went to “Clip” and clicked on “open in timeline.” It opened in the timeline but the audio and video were separate but connected with that little stem – the same as you would see if you overlaid a photo onto your video. Oddly, I opened an event that I had finished editing recently that previously was just fine. But now when I put it on the timeline it, too, had separate video and audio. I recently completed the Apple Pro Training Series book on FCP X and wonder if somehow I changed a setting. I’m completely mistified.