I've played with midi using my piano/keyboard hooked up to my computer for a long time. About 6 years ago, with my SB16 card, came a midi adapter that plugs into my joystick port, and allows a passthrough for a joystick, and midi inputs and outputs. Still works great.
Are these sorts of items still available, or is there something comparable? If not, how do I hook up my (piano) keyboard to my computer in the same way? Where can I find them, and how much do they generally cost?