Shoutbox

Another feature I would like to see is a periodic audible reminder that I have an unread MSN message on my computer.  If I step away for a while I would like to know if someone has sent a message that I haven't seen.  (Much the same way that an orange or blue button on the taskbar indicates that a message has not been read). 

If it was configurable as to frequency and total number of audible notifications that would be fantastic.