MP3 Streaming Script

I’m using JW Media Player to stream mp3 files.

Their forums suggest my use of the following script to avoid mp3 file caching …

[code=php]header(‘content-type: audio/mpeg’);
header(‘cache-control: no-store, must-revalidate’);
header(‘expires: sun, 06 oct 1974 21:00:00 gmt’);

$file_source = $_GET[‘source’];
$file_bandwidth = $_GET[‘bandwidth’];
$file_location = ‘audio/’.$file_source.’_’.$file_bandwidth.’.mp3′;

header(‘content-length: ‘.filesize($file_location));

$file_pointer = fopen($file_location, ‘rb’);

while (!feof($file_pointer)) {
echo(fread($file_pointer, 16384));
}

fclose($file_pointer);[/code]

I then use the following variable in my .swf embedding code …

[CODE]s2.addVariable(‘file’, encodeURIComponent(‘index.php?display=audio&source=’ + track + ‘&bandwidth=’ + bandwidth));
s2.addVariable(‘type’, ‘mp3’);[/CODE]

All of this is working but I have two questions / concerns.

1) I can access the audio file directly by typing “http://localhost/index.php?display=audio&source=somesong&bandwidth=hiband” into the browser address bar. I’d like to disable this possibility so that only the intended page can access/embed the stream. The page and the script are both located in the same php file, where one calls upon the other. How can I protect the stream location?

2) Sometimes, my overall javascript/php approach is causing audio to load much more slowly than before. I don’t know much about the commands being used in these scripts, so I’m wondering if there’s a way to keep things streaming at a normal pace. Ideas? Observations? Could it be that my use of “encodeURIComponent” in the javascript or the port which is referenced by the php code?

Thanks in advance.

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