[App_rpt-users] Translating voice messages in French : where's the "to" ?

Hi, I'm translating the voice messages, so that they are in French, and with "real names". f/ex, instead of "Node 1234 connected to node 5678", I want to hear : "Ajaccio VHF connecte a hub voip" I found the corresponding audio files in /var/lib/asterisk/sounds/rpt, and I recorded them in French. But I still hear the "to" in English, and I didn't find any file named "to.ulaw" or "to.gsm". So, where's the "to" ? ;-)