Issue with mp3 file on asterisk 13

Hi, i want to play mp3 file with playback application but file is not playing after install the suitable codec for mp3 and do almost all R & D for this . I want to play mp3 by using php ami but there is problem in sound, no sound is coming and showing error format error .How to fix it and play mp3 file?

Did you google a bit…?

If you are getting format error, it means the file does not have a name extension that matches the actual contents.

Why do you want to play MP3. The quality will be lost in the trascoding; why not pre-convert?

Yes but issue is still there

i have checked everything and it is ok