Here's what I do:
Hit this website:
http://www.whro.org/home/html/liveradio/1920s_wma.html
Minimize and fly my mission. It's total streaming of old tymey type music and commercials of the period. totally free and streaming is high quality. you name it from the 30s and 40s, they play it. it totally enhances the experience. i used to load up a bunch of 40s mp3s when i played Silient Hunter and let the crew play their victrolia.
yarables