Webmasters can and may use this HTML-code to link E2Radio:

<a href="http://www.e2radio.com/popplayer.php" onclick="windowObj = top.open('http://www.e2radio.com/popplayer.php','new121904', 'width=315, height=200, directories=no, location=no, menubar=no, resizable=no, scrollbars=no, status=no, toolbar=no'); if (windowObj != null) {windowObj.focus()};return false;" title="http://www.e2radio.com/popplayer.php">&raquo; E2Radio MiniPlayer</a>

Simply Copy-&-Paste this link into the HTML of your website.

You are not responsible for any music law or what so ever.
The code only links a pop-up screen,
placed on a website and server that is NOT yours.
So nothing illegal about that!