*.mp3 recordings are not showing in CDR


I converted all *.wav recordings to mp3, and they do not show on CDR report - there’s no link for playing them.
Tried to modify /var/www/html/admin/modules/cdr/cdr_audio.php and added the mime type of mp3 files.
That didnt help.

Anyone has any ideas how to make it work?

Im using latest version of freepbx on asterisk 1.8 (its upgraded from asterisk now with asterisk 1.6)