I downloaded your file to check your technical settings. They are correct, but you have some rather severe "clipping" on your recording. This is when the wave forms on your recording go above the top line, and this can cause your voice to sound distorted.
You will need to decrease the input volume or back away from the mic a bit.
I did not listen to the whole file - the PL'er will do that, so I don't know how bad it is throughout. From what I hear, I think it is acceptable enough to use, but please try to fix this before recording more sections! We want you to be happy with your finished product as well!
Here is a video on how to tell your volume levels in audacity: http://www.youtube.com/watch?v=w9WF82rf81o
Oh and please tell us the running time of your files when you submit them. It is needed for cataloging.
Edit: I looked back through your posts, and saw that your first test submitted was a little too quiet (and unfortunately the second one slipped through without being checked.
) I think if you get your volume somewhere inbetween what you had on your first test and this recording you will just right!