What operating system are you on? Which processor do you have and with how much RAM?
The Vixia should deliver your files at M2TS files, which should edit easily in Premiere Elements 15. How did you get the video files from your camcorder to your computer?
Was this video project created in version 15? As an experiment, try starting a new project and adding some of your video to it. Do you see the same issue in this new project?
Windows 10. Intel Core i3 2120 @ 3.30GHz. 6 GB RAM.
Used Premiere Elements Organizer to download files. The files are mp4.
This was a new video project created in v15. I tried opening just the single file in a new project and got the same results.
I've opened the unedited mp4 file in 3 different viewers and it plays correctly in all of them.
Your computer is pretty underpowered for editing with Premiere Elements. It's possible your issue is related to that.
Does the video play exactly the same wrong audio at exactly the same spot whenever you play the video? Does it do it at the same spot if you start a new project and drop that video into it?