Why is it command-line? Command-line is worse. We've had mice since like 1985. Every other emulator has nice, easy-to-use menus, which you can also access during the game rather than trying to remember to hit the Tilde key to change the volume (wtf?!)
Menus are nice. Nesticle was DOS and that had a menu. It had mouse support. That was 1997.
Did you know that the year is 2011 right now?!?!