I listen to the Passporters Moms Podcasts- they focus on Disney vacations. Mostly WDW, but also Disney Cruise Line, Disneyland occasionally. They are totally okay for a kid to hear. Scroll down to see their long list of podcasts.
http://www.passporter.com/podcast/home.php
Disboards (Disney message boards) also has a podcast. They try to keep it clean, but sometimes wander into innuendo. Most of the podcasts are just long-winded chatter about Disney "news" but I do like their top 10 lists like the top 10 restaurants at Disney or the worst 10. However, I find their podcasts difficult to navigate to find what I want to hear.
http://www.disunplugged.com/