So i am not entirely sure where to begin, but this is what I am looking for. I currently gained 4 speakers. each have a plus and minus cable.
two fisher model STM-DA300 (25W peak)
two Smaller sony speakers, (20w peak)
Wireless audio sounds like a good idea, but it doesn't work nearly as well in practice. I would avoid it if possible.
Now, you are at least on the right track. If your speakers are not computer speakers, then you will need some kind of receiver or amp to bridge the gap. From there, you will just need to get something fairly simple like a 3.5mm stereo to composite stereo cable. The rest is fairly simple I would think.
Most contemporary Mac's Macs have TOSlink out (optical digital). ...and of course most contemporary receivers accept TOSlink connections. You just need the adapter and cable. If going over and above is still a desire you may want to consider this for the best possible sound quality.