is there a way to render, automatically, all audio channels I have in my project as separate wav's?
there are lots of channels, I don't wanna turn on and off channels whole day and render :/
I can't see that option anywhere, I just wonder, maybe there is some script out there, or something like that :)

Trackalizer (http://www.vasst.com/index.php?option=com_virtuemart&page=shop.product_details&flypage=flypage.tpl&category_id=2&product_id=106&Itemid=57), a free utility from the VASST site, will do what you want.
If you haven't already done so, you'll need to register to be able to download the file but it's quick and spam-free.

nice, that's the thing... will try it right now.
thanks

Another neat trick, that may or not be of use in this situation, but might in others, is to render a multitrack wave file. This works great for use in SoundForge or Audition.