Slow_Old_Dad_03GTw170k

Got tired of the factory 460 CD player eating my favorites so I had a cheap single cd Sony installed last weekend. Went to use the ac at 91F yesterday and nothing comes out the console or side vents, just the defroster. The ac is working great, nice and cold, with the blower doing its thing. Just nothing out the center or side vents. Same for non-ac air or heat. I pulled the radio yesterday hoping for a little sticky note that read "here is the problem"...but nothing there. The fuse diagram didn't help much either. I thought there might be an actuator bar or something. The radio shop pleads ignorance but said to bring it in and they'll check it out. Any ideas would be greatly appreciated.