One of the nice things about being a former signaler myself, was being able to tune into radio stations and play music over the audio speakers. Whether I was on a 707, a destroyer, or in the back of my radio truck, I often tuned into BBC International, or local radio stations.
Wouldn't it be nice that the bomber radio's could tune into a radio that played 40's music while on a bombing run? Just a nice-to-have feature...