Playing Sound Through Computer

[danruff5]

What I think I have to do is have another program running on the computer. The robot would then send a signal to the computer which the other program would interpret it and then play a sound file based on that.

What would I have to do to make the other program and make the robot communicate with it (unless you have another idea).

Thanks!

P.S. I still want to do this because I think it will be really cool (not necessarily for the competition).