Any 'system', if that means it is an all-in-one thing, is probably junk. If it combines a radio tuner, amplifier, CD player, and speakers, you can be pretty sure it is garbage.
Stereos are cheap. You could buy a complete component system on Ebay for probably $100.
Buy the pieces seperately. You need a receiver and speakers. Your computer probably has a CD player and MP3 player; just hook it into the receiver. Or buy a CD player.
Panasonic has absolutely no reputation as an audio company.
Decent brands for electronics are Onkyo, Marantz, Outlaw, and then beneath that brands like Kenwood, Pioneer, Technics.
Good speaker brands are PSB, Paradigm, and beneath that Cambridge Soundworks, JBL. These are just examples, there are others.
Never buy speakers from an electronics company (i.e., Sony, Panasonic, Pioneer, Kenwood).
Unless you are cramped for space never, ever buy a 'system.' They always use the cheapest parts. If one component breaks, you have to pay to replace *everything*. The speakers are almost always complete garbage.
Systems last a few years. Good individual components last decades.
EDITED TO ADD: I just looked this system up. It's even worse than I imagined. It has a five disk changer and a *dual* casette deck? This is a disposable toy. The specifications provided by Panasonic are outrageous lies even by audio standards: they claim it has 160 watts per channel. If that's true I'll eat my hat. Something on this overstuffed monstronsity is guaranteed to break soon after purchase. For the $200 it's going for you could buy a decent new receiver and bookshelf speakers or excellent used equipment on Ebay. Look for Cambridge Soundworks speakers on Ebay; they're sold by the manufacturer with warranty for very cheap. Then buy a nice receiver to go with it.