I downloaded this file which is a set of spanish sounds for freeswitch: http://files.freeswitch.org/freeswitch-sounds-es-mx-maria-44100.tar.gz As you see It only has sounds for the 44100 frecuency. To generate files for the 8000, 16000 and 32000 frecuencies, I untarred the file inside freeswitch/sounds directory. After I untarred the file, there was a directory called es/mx/maria which has all this subdirectories: ascii currency ivr phonetic-ascii voicemail conference digits misc time zrtp For each of these subdirectories I made this: cd "one of the directories inside sounds/es/mx/maria " mkdir 8000 mkdir 16000 mkdir 16000 cd 44100 for a in *.wav; do /usr/bin/ffmpeg -i "$a" -ar 8000 -ac 1 -ab 128 "../8000/"$a; /usr/bin/ffmpeg -i "$a" -ar 16000 "../16000/"$a; /usr/bin/ffmpeg -i "$a" -ar 32000 "../32000/"$a; done Now I have a complete set of spanish sounds for the 8000, 16000, 32000 y 44100 frecuencies ¿What would I need to configure in freeswitch to use these spanish sounds instead of the english ones? Thanks in advance for your kind help.