IMovie Video Merge Degraded Sound Quality

I was trying to merge several clips together in iMovie. All the clips look and sound great, but after merging them the sound has degraded and sounds hollow and tinny. The picture quality does not seem to have been affected. What can I do to merge these clips into a single file without losing the integrity of the originals? (I did search the database here, but the resolved question I found was from 2006, and the instructions did not seem to match my current version of the software. The answer said to 'file --> export' to Quicktime, but all I can do is 'share' and Quicktime is not an option).

I managed to resolve this problem. I could not figure out how to fix the sound settings using iMovie, but I was able to merge the clips into one file using Quicktime (standard).
I opened the first clip with Quicktime, then I dragged and dropped the next clip where I wanted it, and repeated for all the remaining clips. Upon closing that Quicktime window, I was prompted to save the 'movie', and it was a much smaller and better quality file than what iMovie produced for my purposes.
I hope this helps anyone else who might have this problem.

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IMovie Video Merge Degraded Sound Quality

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