[Freeswitch-users] Increase volume of "say" phrases to match play-file?

Hello, Is there a way to increase the volume of the "say" phrases to match the "play-file" phrases? I am using mod_directory, the sound files from http://svn.freeswitch.org/svn/sounds/trunk/en/ca/june/48000/directory/, and the built-in phrases from /usr/local/freeswitch/conf/lang/en/dir/sounds.xml. Thanks, Robert