Playing a prerecorded message at an extension

Hi everyone. I have ran into a road block and not sure how to procede with this. What I am trying to do is have a web callback option on my website. The customer can input his phone number and submit. The phone system then will call the phone number back and connect to a particular extension. The extension will then play a recording to the customer over the phone and disconnect when finished. I have found all the information I need to set up the web callback portion. What I need assistance with is playing the recording. Is it possible to have an extension play a wav or mp3 file or possibly go straight to voicemail and have it play instead of having the option to record a message? If I am going the wrong direction on doing this or you have a better way, please let me know. Thanks for all your help.

Sure. You can use a wave file. Have a look at the Playback and background commands:
voip-info.org/wiki/view/Aste … d+Playback
voip-info.org/wiki/index.php … Background