Another Novice question

Hi…Well I was finally going along at a good clip on my project…I’m a converting cassette audiobook to mp3 format. Part of the procedure involves exporting the converted text into a folder on my laptop. I always check the mp3 to be sure it’s OK and I was pleased that after a lot of learning and struggling I was coming out with a useable mp3.

But here is my problem…When I checked the mp3 for cassette #12 the audio was speeding along at chipmunk speed. Nothing changed with settings so this is baffling. I did try to slow it down but doing so compromised the quality meaning it sounds odd slowed down. Can anyone help?

Did you try playing the recording before exporting it?
Did you save the project? (as an “Audacity Project”)?