As spacemissing laid it out, forget it. It was an old and cheap piece of cr*p, and without the remote, it's utterly worthless.
The really sad part for me at hearing of dim fools buying and using such cheap piece of cr*p systems is the fact that GOOD quality audio and video gear has NEVER been more affordable than in the present.
In 1976, I bought my first quality audio receiver. It was a Harman Kardon 730, and it cost $450 back then. Adjusted for inflation over the last 42 years, that would be a price of closer to $2,000 than $1,500 today. Well, with even $1,500 today, you can get a terrific home audio-video receiver, a quality set of home audio speakers and a disc player, too. While that would cost more than just buying the cheap cr*ppy system, it would last for decades not just a few years, and so, on a year by year basis of lifespan, it would not actually cost any more money, but would deliver far better sound to enjoy.