Camstudio 2.0 Recording from Speaker

normally, you don't record from speaker - are you sure you're not mistaken?
recording is done from the Line out

What I meant was... when I record from speaker i'm talking about recording from screen

However, I want to know if there is way to record from the screen (speaker) and the microphone

i downloaded the program and will try it

i have the same error -
from the help file :
Recording Audio from Speakers
(From the main menu, choose Options->Record audio from speakers)
By selecting this option, CamStudio will record the output from your speakers while it is capturing video.  This is ideal for recording a gaming session or a movie stream. You will need a sound card with speakers attached to use this option.
Please note that not all soundcards support this function. (Most modern and branded soundcards usually allows you to record from your speakers
you can always contact the maker with this problem   :     http://www.365admin.com/helpdesk

and what was the solution?

It was something like enabling stereo mix, then set your soundcard line-in, and recording from microphone, instead of recording from speaker.

ok

Ok, since this explaination didn't help me at all and I figured it out...I thought I would share.  

Right click on your sound icon next to the clock on the taskbar and hit open volume control.  Then click on options/properties in the new window.  Now you should see Mixer Device and you want to select your INPUT from the drop down.  The radio button next to recording should now show as marked.

Under Show the following volume controls:
put a mark next to Stereo Mix and hit ok.

By default, my Stereo Mix was muted and I couldn't record both my mic and my speakers on my Camstudio.  I unchecked Mute button under Stereo Mix and now it all works.  

Hope this helps someone!  Took me over an hour to figure it out.