I wish that some of the N900 apps (namely RTCOMM) had the ability to pipe sound to different devices, based on the users setup. For example, you could have the phone ring over the loud speaker regardless if your headset was plugged in, so you wouldn't have to keep them in your ears to hear the phone. Similarly, you could play music via headphones and have the phone ring in the headphones, but take the call in a to-the-ear manner.