iPod Serial play/pause on UNO

[system]

I should probably add this in as well.

The red thing is this: http://www.sparkfun.com/products/8745
To step 5v(UNO serial) down to 3.3v(iPod serial)

And this is the breakout kit for the iPod dock connector: http://www.sparkfun.com/products/8295

and the Ping sensor: http://www.parallax.com/tabid/768/ProductID/92/Default.aspx

Thanks!