Asterisk setup help

Dear bidder, i have a server with asterisk and freepbx. My voip account is correctly set up and the server makes call. On [login to view URL] i made a script that: 1. Call a number 2. Wait the answer 3. Play a small text to speech telling "we are playing a message" 4. Play an mp3 5. Hangs up The problem are: - I can't ear the mp3 - If i use the Festival command, it fails I need someone to fix it and explain me why it's not working. This is for a personal experiment, in case of success we will go on with the real project, so at tthe moment i don't have a big budget. Thanks Simon