A:AnswerThe 2 full range speakers and the subwoofer are all connected, and they plug into the standard 2 channel speaker output jack on your PC or laptop or cell phone.
A:AnswerThis will connect to any device with a 3.5mm aux connection. The mac mini should have one, so it will work, if it doesnt you could use a usb sound card.
A:AnswerTake them back or if they are six months old then dump them in the trash can in front of Best Buy (inside the store is even better) then leave a bad review about the speakers.