Feel free to call me crazy… but how about the Joe Rogan podcasts? I feel they are no more politically biased than other sources like the VOA, etc… He has a wide variety of guests left to right to neutral. Maybe a late night thing? The podcasts are typically long at 2-3 hours long. I’ll check on availability for free rebroadcast.
There are a good 1000+ Podcasts in his archive and a large percentage of those are long interviews with amazing people. The group could pick a handful of ‘appropriate’ ones.
Anyone that counters with, ‘he’s too far left’ or ‘his guests are too eccentric’ arguments… You just skimmed the offerings on the web page. Dig deeper. There are tons of amazing interviews with notable scientists and philosophers among others. This may be an easy win to get things like a 3 hour interviews with people like Neil deGrasse Tyson, Elon Musk, Anthony Bourdain… without some middle-man agency digging for cash handouts for usage rights.
I suggest this because not only do I like Rogan, but I feel like he probably owns the rights to his content.