First , thanks for you software, it's great for relaxing.
I was wondering, if it is not too much work, if it is possible to add a brown noise voice type to gnaural ? I find it much more pleasant than pink noise. You can have some info on it here : http://en.wikipedia.org/wiki/Brown_noise and hear what it sounds like here http://simplynoise.com/
btw i love their oscillating effect also, it could be good to have a tool for helping to make sinusoidal shape)
Btw thanks for your software.
These are good suggestions, and thanks for that interesting noise player link. I obviously can't modify the current Pink Noise voice since old presets will always depend on it's stability. But i have thought for some time about creating a new voice, perhaps just called "Noise", with it's spectrum/tone alterable by adjusting either/and the Beat and Base parameters, much as Rain and Water can be modulated. Then people could vary tonality from brown to white and anywhere in between with full control.