Mercifully, no. I'm glad that they stopped after Christmas. We have one station here that starts playing Christmas tunes at the beginning of November. And from there on until Christmas, that's all they play! My sympathies to you for your pain.
I remember seeing Hot Cross buns in the supermarket on the 8th of January.
The music in the shops comes out in November here.
Shopping at Christmas time is unpleasant with the constantly repeated music. It's a good idea to take some noise cancelling headphones and an mp3 player to buy the food for the week.
Songs about white Christmas and snow through a cheap PA and wrestling with a three wheeled shopping trolley while it is 110 farenheit in the shade is enough to drive you insane.
Geek, have you tried calling and requesting they not play it. If they get more not-requests than requests it might cancel out.