The Radio Directory Featured Sites Old Time Radio Old Time Radio Shows MP3 Old Time Radio Shows Old Time Radio Show Downloads Thousands of categorized old time radio shows in MP3 format available for free download. Listings IMDb: Casey Kasem - provides his filmography and voice work. Voice Chasers: Casey Kasem - list of characters he has portrayed, including Shaggy from Scooby-Doo, Robin, and more.