Recording in mono ?

Hi All, For the life of me I can’t figure out why I can not record in mono. Also I’m set for “Line In” and my “computer” still picks up audio ( and in stereo). I never had this problem before I got Cubase 6. Does anyone have an idea as to what I’m doing wrong? I’m using an iMac OSX10.6.8. Any help would be greatly appreciated. I can’t find answers.

Make a mono bus and record it to a mono channel!!!

Thanks “split” got recording now in mono, all I need to to is figure out why the mic does not work.

What kind of mic do you have John ?

Thank you everyone, all is working fine now. Computer setting was off.