Hey Linc, got a question. Do you have any insulation under the floors, between the living area and the basement? And do you what to heat the basement, or just keep the floor from getting cold?
If there's no insulation, any heat that 'goes down' is being lost to the cold basement'.
I found that my concrete floors downstairs will warm some , closer to the stove the better!
I'm assuming you have wood floors without carpet. If so, try some area rugs also!