As part of collecting audiobooks, I have grown quite a library of OTR files (OTR = Old Time Radio) - primarily 30-minute "Dragnet" and "Creaking Door" and "Nightwatch" (and LOTS, LOTS more) shows.  I will send anyone who asks for one a sample show (Dragnet).  If your e-mail account allows you to receive it, play it and enjoy it, I will be glad to send another such file with each and every request from my bookshelf!  Try one and see!  They go smoothly to g-mail accounts for sure!