Welcome to MR, lakewood
I looked in the Reader Library help.
You can set the file association by:
Click on Edit at the upper left of the Reader Library.
Click on Preferences.
This is what the help showed to do..
<....click me
I hope this helps. Let us know what happens.
P.S. Just in case.....
Did you know that MR has free ebooks? They have been beautifully handcrafted by some very dedicated MR members. (I believe that they are better formatted than Google books.)
BBeB (Sony lrf format) and
ePub format
Free ebook sites
feedbooks.com
manybooks.net
Free and for purchase ebooks
smashwords.com
baen.com
Plus Baen has a
great free library