Audio sounds horrible after import to FCP X.

Thanks, PeiroF. That did help a little. However, there is still a huge difference between the original audio quality and the quality within FCP X. If anyone else has any theories on why the quality is degrading so much after import, that would be greatly appreciated. If you'd like to hear a sample: http://www.youtube.com/watch?v=R3FjZAabJsU

Thanks, Tom & Pierre. Based on your feedback - I decided to start over with a new project. I made sure the auto correction was turned off for audio and I still experienced the same problem. I then manually checked the audio settings to ensure nothing was checked for Loudness, Background Noise Removal, and Hum Removal. Unfortunately, it is STILL manipulating the audio quality. Tried again with both iphone and cannon camcorder with similar results. Now, I'm wondering if I have a hardware problem with RAM or if I should just reinstall FCP X. From everything you guys say, this is not normal - so I think something is broken. I'll post an update if this fixes it. If anyone else has ideas, I'm open to them.

Thanks again for your help with this. I do believe some of the issue was with audio correction. It's amazing how much damage those settings can do to your audio files. But the choppiness was definitely something going on with FCP X. I removed the app and reinstalled. I turned off all the automation preferences per your advice, especially for import. Now the app is working fine. I'm back in business. It also freed up a ton of memory with the reinstall, so maybe a log file had been building up or something. But it's clean now. Thanks again.