[Freeswitch-users] Silence instead of spanish wav installed

Hello, I installed a spanish sounds package to my Freeswitch under /usr/local/freeswitch/sounds/es/mx/ directory I'm trying it by entering an empty conference, and I only hear some seconds of silence (where conf-alone.wav should be played), and then the music on hold. I know the files are not missing, and Freeswitch is finding them because when I remove "/es" directory, I get error on CLI when executing a conference, and getting directly to MOH. Any help will be appreciated. Thanks! Alex