Great work and quickly response! Rated 5 out of 5 stars

It's a great tool in spite of a minor bug in it.
<br>It should use double quote instead of single quote in enclosing output file name and the source address. <br><br>Sample:<br> <br>now it is:<br>wget --header="Host: www.python.org" --header="User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20100101 Firefox/11.0" --header="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" --header="Accept-Language: en-us,en;q=0.5" --header="Accept-Encoding: gzip, deflate" --header="DNT: 1" --header="Connection: keep-alive" --header="Referer: http://www.python.org/getit/releases/2.7.2/" 'http://www.python.org/ftp/python/2.7.2/python-2.7.2.msi' -O 'python-2.7.2.msi'<br><br>it SHOULD be:<br> wget --header="Host: www.python.org" --header="User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20100101 Firefox/11.0" --header="Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" --header="Accept-Language: en-us,en;q=0.5" --header="Accept-Encoding: gzip, deflate" --header="DNT: 1" --header="Connection: keep-alive" --header="Referer: http://www.python.org/getit/releases/2.7.2/" "http://www.python.org/ftp/python/2.7.2/python-2.7.2.msi" -O "python-2.7.2.msi"

This review is for a previous version of the add-on (0.5). 

Are you using wget on Windows? This only happens on Windows because it doesn't support single quotes. I've updated the addon to allow you to specify whether you want it to use single quotes or double quotes. Find that option in about:config under cliget.use_double_quotes.

The update is being reviewed by Mozilla team and may tabke a few days until it goes live. Meanwhile, you can package the addon yourself from bitbucket repo if you don't like wating ;)