Red's Wines and Blues on 30 2nd Street East, Kalispell, has a nice bar and music entertainment. Another nice bar would be Bay Street Grill. Moose's is another fun place to hang out and have a good time low key and fun. Or if you want a coffe shop hang out with music I would suggest Colter Coffee on 424 S. Main Street.
Gives you a few places to hang out at least.