multisession download

Hello, I have a little strange question. Let say if I have a file "/home/user/somefile.jpg" I wanted to output this file from script, I wrote a little script: ------------------------------------------------ <?php // open and pass the file out $handle = fopen($this->filedata['filepath'], "rb"); while (!feof($handle)) { $buffer = fread($handle, 4096); echo $buffer; } fclose($handle); ?> ------------------------------------------------ It works !!! But if I use a download accerlator to download this path, I can only open 1 download session. Is there any way to pass a file out so one can download the file with a multi-session download manager? Thanks Koala Yeung