If I am at home and on the computer, I either load up the Sirius/XM app on my TV or will go directly to the Sirius/XM website as they have Holiday Traditions on all the year through.  Though they don't play as many of the songs that they play during the Holidays.  i.e.,  I am hearing Feliz Navid by Jose Feleciano this year, and don't remember it before on Holiday Traditions, but mostly during the year they have somewhat of a loop that has maybe 150 or so songs and they change the order of the songs.

I also listen to Santa Radio UK when I am on the computer, and they have an app now, but I haven't downloaded it.

I also listen to soma/fm department store Christmas, and yes the asking for donations breaks in every 5 or 6 song can be a bit of a nuisance, but they play a nice mix of music and very enjoyable.