Editing an imported WAV file

I am trying to edit a WAV that I imported. When I go to play it it too fast. I have tried slow it down using Change Speed but it still too fast.

It might be coming up at the wrong sample rate. If you’re using Windows you can right click on the file and click Properties → Summary → Advanced and Windows will tell you what it thinks the sample rate is.

Does that match up with what Audacity says?

I take it this file plays ok in other software, right?

Another possible problem might be that it’s not a PCM file. You can use the same Windows menu to find out the format, what does it say?