function _readframe() {
	if ($this->debug) print($this->debugbeg . "_readframe()<HR>\n");

	$file = $this->file;

	if (! ($f = fopen($file, 'rb')) ) {
	    $this->error = 'Unable to open ' . $file;
	    if ($this->debug) print($this->debugend);
	    return false;
	}

	$this->filesize = filesize($file);

	do {
	    while (fread($f,1) != Chr(255)) { // Find the first frame
		//if ($this->debug) echo "Find...\n";
		if (feof($f)) {
		    $this->error = 'No mpeg frame found';
		    if ($this->debug) print($this->debugend);
		    return false;
		}
	    }
	    fseek($f, ftell($f) - 1); // back up one byte

	    $frameoffset = ftell($f);

	    $r = fread($f, 4);
	    // Binary to Hex to a binary sting. ugly but best I can think of.
	    $bits = unpack('H*bits', $r);
	    $bits =  base_convert($bits['bits'],16,2);
	} while (!$bits[8] and !$bits[9] and !$bits[10]); // 1st 8 bits true from the while
	if ($this->debug) print('Bits: ' . $bits . "\n");

	$this->frameoffset = $frameoffset;

	fclose($f);

	if ($bits[11] == 0) {
	    $this->mpeg_ver = "2.5";
	    $bitrates = array(
		    '1' => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0),
		    '2' => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0),
		    '3' => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0),
			     );
	} else if ($bits[12] == 0) {
	    $this->mpeg_ver = "2";
	    $bitrates = array(
		    '1' => array(0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 0),
		    '2' => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0),
		    '3' => array(0,  8, 16, 24, 32, 40, 48,  56,  64,  80,  96, 112, 128, 144, 160, 0),
			     );
	} else {
	    $this->mpeg_ver = "1";
	    $bitrates = array(
		    '1' => array(0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 0),
		    '2' => array(0, 32, 48, 56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320, 384, 0),
		    '3' => array(0, 32, 40, 48,  56,  64,  80,  96, 112, 128, 160, 192, 224, 256, 320, 0),
			     );
	}
	if ($this->debug) print('MPEG' . $this->mpeg_ver . "\n");

	$layer = array(
		array(0,3),
		array(2,1),
		      );
	$this->layer = $layer[$bits[13]][$bits[14]];
	if ($this->debug) print('layer: ' . $this->layer . "\n");

	if ($bits[15] == 0) {
	    // It's backwards, if the bit is not set then it is protected.
	    if ($this->debug) print("protected (crc)\n");
	    $this->crc = true;
	}

	$bitrate = 0;
	if ($bits[16] == 1) $bitrate += 8;
	if ($bits[17] == 1) $bitrate += 4;
	if ($bits[18] == 1) $bitrate += 2;
	if ($bits[19] == 1) $bitrate += 1;
	$this->bitrate = $bitrates[$this->layer][$bitrate];

	$frequency = array(
		'1' => array(
		    '0' => array(44100, 48000),
		    '1' => array(32000, 0),
			    ),
		'2' => array(
		    '0' => array(22050, 24000),
		    '1' => array(16000, 0),
			    ),
		'2.5' => array(
		    '0' => array(11025, 12000),
		    '1' => array(8000, 0),
			      ),
		  );
	$this->frequency = $frequency[$this->mpeg_ver][$bits[20]][$bits[21]];

	$this->padding = $bits[22];
	$this->private = $bits[23];

	$mode = array(
		array('Stereo', 'Joint Stereo'),
		array('Dual Channel', 'Mono'),
		     );
	$this->mode = $mode[$bits[24]][$bits[25]];

	// XXX: I dunno what the mode extension is for bits 26,27

	$this->copyright = $bits[28];
	$this->original = $bits[29];

	$emphasis = array(
		array('none', '50/15ms'),
		array('', 'CCITT j.17'),
			 );
	$this->emphasis = $emphasis[$bits[30]][$bits[31]];

	if ($this->bitrate == 0) {
	    $s = -1;
	} else {
	    $s = ((8*filesize($this->file))/1000) / $this->bitrate;        
	}
	$this->length = sprintf('%02d:%02d',floor($s/60),floor($s-(floor($s/60)*60)));
	$this->lengths = (int)$s;

	if ($this->debug) print($this->debugend);
    } // _readframe()