Looks like a great low-end system. The DD5.1 is great for DVDs and whatnot. Unfortunately, the system is pretty underpowered. It depends on what you want to spend on a speaker system. A really decent one will be $150 - $350.
But if you're not going to be listening to them at extreme volumes, the 5300 system will sound great! There's no such thing as a bad speaker system that costs as much as they do.
If you are going to doing some hardcore stuff, I would recommend the Logitech z560 system, or the Altec Lansing 641 or ADA systems. But hey, that's just me.
-Whir