PHP запуск внешних программ

<?php
echo '<pre>';

// Outputs all the result of shellcommand "ls", and returns
// the last output line into $last_line. Stores the return value
// of the shell command in $retval.
$last_line = system(' mplayer /home/took/normal/01-Russkiy_passadgir.mp3', $retval);

// Printing additional info
echo '
</pre>
<hr />Last line of the output: ' . $last_line . '
<hr />Return value: ' . $retval;
?>

MPlayer 1.0rc3-4.4.4 (C) 2000-2009 MPlayer Team
Terminal type `unknown' is not defined.

Playing /home/took/normal/01-Russkiy_passadgir.mp3.
Audio only file format detected.
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 44100 Hz, 2 ch, s16le, 128.0 kbit/9.07% (ratio: 16000->176400)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
[AO SDL] using aalib audio driver.
Audio: no sound
Video: no video


Exiting... (End of file)

mplayer /home/took/music/test.mp3