The problem is the equals signs.
The %20 is okay since that is a graphic representation of a
space, which some sites and some browsers will not allow.
If you can't get this link to work directly, copy it to your
clipboard, pasting it into the open box in your browser, and
be sure everything is on a single line before you press
enter. That should do it.
http://www.arrl.org/files/file/ARES%20Audio%20Newsletter/ARRL%206-19-13.mp3
Mike Duke, K5XU
American Council of Blind Radio Amateurs