[hanoz]

I've always done the same. As you say, it does have to be something very familiar. The Hitchhiker's Guide to the Galaxy original radio series more often than not, for me. I've tried purpose created material, like This Book Will Send You to Sleep on Audible, but it was too interesting.

I've never tried with a Bluetooth headphone but have always used a wired one, with one line cut off a the Y junction to help avoid tangling. Sometimes have to use a player which supports sending stereo as mono, otherwise you often only get one side of the dialog in dramatisations, like Hitchhiker's.