Question: dedecmsV5.7 uploaded in the background m4a audio files (m4a audio format how to add, change system - Basic System Configuration - attachment settings) later, the list does not show, as:
solution:
Open the include / Dialog / select_media.php , Find
#\.(mp3|wma
About 212 lines
else if(preg_match("#\.(mp3|wma)#", $file)){ 改成 else if(preg_match("#\.(mp3|wma|m4a)#", $file)){
Then OK!
