Well guess what? The Altair Clone can play "Daisy" and "Fool on the Hill" through an AM radio after all!
I decided to try once again based on a question someone asked me in an email about the EMI radiated fom the signals which drive the front panel LEDs. Sure enough, the EMI was there after all, albeit weaker than from the real machine, but it sounds the same. This is a good demonstration of the accuracy of the Altair Clone's emulation.
Here's a video of the Clone playing music through the radio: https://youtu.be/wDqArTme4B8
Mike