Trying to help my girlfriend…I don’t know anything about sound mixing. Don’t know if this is a Windows problem or an Audacity problem… Using Audacity vers. 2.0.3 with Windows 7 64bits and a Focusrite Scarlett 2i2 with a mic and headphones plugged in. I’ve got the latest drivers updates for Windows and the Scarlett. I’ve configured Audacity to show line in: Scarlett 2i2 and Lineout: Scarlett 2i2, Mono. When I try to record I get a flat line. I’ve gone into Windows and specified line in default is Scarlett 2i2 and line out default is Scarlett 2i2. The device manager says things are working fine. When I try system sounds test, I hear them thru the headphones plugged into the Scarlett. (So output seems like it is ok). But…It seems that the Scarlett 2i2 is not being recognized as my mic. I’ve check mute settings in Windows etc… Any help would be appreciated!!!
If you are recording one microphone, ensure that you use input 1 (on the left) of the Scarlett.
Thanks for the response. I’ve tried plugging the mic into both the left and the right input of Scarlett. Unfortunately, neither case worked. Still can’t get my system to recognize my mic…
Ensure that the Scarlett is connected before you start Audacity.
Set the recording input in the Device Toolbar so that the Scarlett (the USB option) is selected.
If you still have problems, what sort of mic are you using?
Thanks for the ideas…BUT…I’ve made sure that the mic was already connected prior to starting Audacity and I’ve made certain that the Scarlett was selected in the Device toolbar. No luck!!! In terms of the mic, it’s a RODE NT1-A. …and no, it doesn’t have an on/off switch…I already thought of that one. Once again any thoughts are appreciated…this one has me completely baffled.
but it does require “phantom power”.
Are you using a proper microphone lead with a 3 pin connector at one end and a 3 hole connector at the other end, and do you have phantom power enabled on the Scarlett?
48 volt phantom power only works with cables like this between the microphone and the sound device.
http://kozco.com/tech/audacity/pix/XLR-Cable.jpg
Phantom power is the red button on the front? I can’t get a good picture of the unit.
Koz
Thanks guys! I said I was an extreme newbie!! Audacity worked like a charm…Windows was fine…It was me not understanding “phantom power”. 
To me, the computer supplies the power for USB devices. Not necessarily in the world of higher end sound. It was the phantom power setting that was the problem! (In other words, it was me not having the mic turned “On”…ouch!) 
Thanks again!
Phantom Power while normal is a bit of black magic. How do you send enough power to run the microphone up a long mic cable and have it completely invisible to the sound going back down the other way. Couple that with how a condenser microphone works and it’s a wonder these things run at all. Koz