If Firefox tries to open the MP3 file in a tab then that suggests that the server is sending the file as text/plain and not as a content type that force a download action.

See:

• https://developer.mozilla.org/en/docs/Properly_Configuring_Server_MIME_Types

First, I used header('Content-Type: application/octet-stream') to download the file. this did not work in any browser. Then i used header('Content-Type: application/force-download) . this worked in IE, CHROME but not in Mozilla FF 12 version I dont know what content type requires mozilla. why there is so much problem with mozilla. please give solution to download audio mp3 files.

I am using the below code it is working in IE,CHROME. with mozilla when i click on save it is giving binary file and unable to play the file. When click on open option it is downloading in VLC and goes to temp folder. what should I do so that frm mozilla it saves the file in VLC format not in binary format.

$fname=$_GET['f'];

   $file= "music1/".$fname;

header("Pragma: public"); header("Expires: 0"); header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); header("Cache-Control: private",false);

   //header('Content-Type: application/force-download');

//header('Content-Type: application/binary'); header('Content-Type: audio/mpeg');

  	//header('Content-Type: audio/x-mp3');

header("Content-Disposition: attachment; filename=$file");

   header("Content-Length: " . filesize("$file"));
   header("Content-Description: Download");

header("Content-Transfer-Encoding: binary");

// refer to file and exit readfile("$file"); exit();

?>

write now i am only using header('Content-Type: audio/mpeg');