Ta ever,
shinobi1
As you had guessed, I had posted this on a thread for PCs in this Forum.
Honestly speaking, I was at a loss how to decipher what was required of me to do! But someone advised me to check all connections etc.
So, I methodically did that: powered off and disconnected the speakers, re-loaded the iTunes. Blew into the connectors, reconnected, powered up and volia! It worked!!
Never look onto the mouth of a gift horse, me Dad used to tell me! So, I have left well enough alone -- and a happy SWMBO!