How about just sharing the gst-launch parameters that you used, or maybe a short tutorial on how to use expect with gstreamer and any tips/tricks you picked up?

I've played around with gstreamer a little bit, but it's not always so easy to get the parameters right without slowing down the N900 too much. I've never heard of expect before seeing it in your dependencies - it seems like nice quick-and-dirty way to do scripting.