I agree, cables will not help. There are many solutions for your problem, but the issue is the bose does not have enough output to do what you are asking it to. You need something besides a table radio to accomplish what you are seeking. An integrated with a small set of speakers would potentially put you light years ahead of where you are now. There are inexpensive DIY speakers you could try, combining that with a small integrated or receiver would keep you under $500.
If you are not looking to spend any money, you may be out of luck at this time.