I recently was able to try out my friends ipod touch, which had an app called RjDj. It uses the microphone on the device and puts all sorts of effects on it with great success (e.g. delay, reverb, echoes, flange, etc...). It changes the way any environment you are in sounds dramatically. If you've ever used this app or something similar I hope you enjoyed it as much as I did.
In short, I'd love to see a soundscape plug-in for rockbox and was wondering if any developers have taken an interest in building one.
Thanks!