getting current post title from database

Hi,

I am trying to query a table using the post title of the current post. the dj username will be the same as the post title, Can anybody help me with the right query to make $username = the current post title.

<?php
	$username = !!!!!!!!!!!!!!!
$data = mysql_query("SELECT * FROM users WHERE username='$username'")
or die(mysql_error());
 while($info = mysql_fetch_array( $data ))

 print "".$info['djbio'] . "";

?>

Thanks,
Matt