Okay, next step is log output. Get a console debug log and drop it onto pastebin. Lots of useful information available here:

http://wiki.freeswitch.org/wiki/Reporting_Bugs

-MC

On Tue, May 1, 2012 at 7:59 PM, Alejandro Mejía <webudo@gua.net> wrote:
Thanks for your reply Michael.

Yes, I can play the files manually on any player on my computer.
I'm a freeswitch newbie, so I don't know how to change conference sampling rate, so I guess it's on default 8khz, same as the sound files.

On 01/05/2012 11:54 a.m., Michael Collins wrote:
Can you manually play any of the sound files? Also, what sampling rate is the conference and what sampling rate are the files?
-MC

On Mon, Apr 30, 2012 at 6:12 PM, Alejandro Mejía <webudo@gua.net> wrote:
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