I just wired my up this weekend. I went and bought some poratble speakers from walmart. They are philips mp3 speakers with an amplifier that takes 3 aaa batteries they work very well. I cut a few small holes in the bag and have 1 speaker in one pocket, 1 in the other and then the 1/8" headphone jack coming out of the cup holder that I carry my iphone/mp3/scorecard in. The speakers were only about 20 bucks. They have a cage around the actual cone of the speaker so anything you throw in those pockets won't get damaged. I had to cut one of the wires for one of the pockets. If you do buy a split system like this the wires have to be soldered back together. They are a special headphone wire that has an insulator in them that doesn't short them out. If you do want to do this PM me and I will help you through it. It's not that bad. It sounds great by the way. Here are a few pics