I checked with one of the largest collections of old time radio
programs, RUSC.com, to see if they had any information about
the program called "Sounds In Your Ears".  The person who responded
said that they had never heard of the program.  Nothing on the web
either.  Maybe it was just local.  Do you remember what station
broadcast it?  Did you get any other responses?

Regarding mechanical music on old time radio programs --

A few years ago, my wife and I hosted the MBSI Chapter meeting in
Rochester, New York.  As part of the after-dinner entertainment, several
members joined us in a re-creation of an episode of "Fibber McGee and
Molly".  I was Fibber, Bill Wineburgh was Carlo Wilcox, the announcer,
and Jeff Vincent's family did the sound effects, plus several others
who were wonderful but would probably rather not be mentioned.  It was
titled "Fibber Tunes the Piano".  And, as Beulah says, what that man
did to the piano would make you cry (with laughter)!

I collect old time radio programs on tape and CD and have all the
episodes of "Fibber" and "The Great Gildersleeve" and "Our Miss Brooks"
and "My Favorite Husband" and "CBS Mystery Theater".  Every once in a
while I come across something about music boxes or pianos or
hurdy-gurdies or something related to mechanical music <smile>.

At the MBSI national meeting in Chicago, Ron Bopp gave a presentation
about mechanical music in the movies.  He listed dozens of shows that
had some sort of instrument in them and showed many examples.  We saw
one he didn't have, "The Nutcracker", in 3-D a couple years ago.  It
was one of the worst movies I ever saw.  I thought I'd have a nice
afternoon with some wonderful music but they didn't even play the right
music with the "Dance of the Sugar Plum Fairies", if you can believe
that.

The premise of the story (at the beginning) was a family visiting an
uncle in a town house in London (I think).  There were dozens of music
boxes and automata in his home in every scene for the first 20 minutes.
Then a total disaster in a dream sequence that lasted until the end.

Regards
Craig Smith
near Rochester, New York, USA