Setup Pidgin to Notify with the PC Speaker

I often have headphones connected to my Linux machine (running Ubuntu currently) but not in my ears. When that is the case I can't hear people send me instant messages in Pidgin. To solve the problem, I setup Pidgin to play sounds through the PC speaker instead. Here's how.

beep -f 2000 -l 250 -d 250 /
-n -f 1000 -l 250 -d 250 /
-n -f 2000 -l 250 -n -f 1500 -l 100 -d 250 -r 3