Aiwa NSX-D30 CD Shelf System

Pros: Inexpensive, but very good quality
Cons: Only one aux-in port.

I bought this unit today at A&B Sound in Calgary, after looking at what I thought were superior, but fairly expensive, alternatives (Sony, Panasonic, and JVC -- sorry, no model numbers on those). Sitting all by itself with no pricetag was the Aiwa unit....

Pros: Sound quality is good, unit easy to use.
Cons: CDs freeze mid-song!

I was perfectly happy with this mini system until about three months after I purchased it. Suddenly all of my CDs began to stop dead in the middle of a song. We're talking brand new CDs here. It doesn't happen at any specific point in a given CD, just...