SAFD: I do a mix of music and podcasts or nothing for runs depending on how long the run is, or if I'm running off an exceptionally bad day, etc. I have built a couple of playlists on spotify using bpmfm that have the same number of beats per minute (or within 2 +/- my target) to help keep my cadence steady. The one I use the most is a ridiculous mix of late 90s/early 2000s country, assorted pop/stadium rock, some tom petty, and hip hop. Oh, and some oddballs like offspring are in there too.
For podcasts I have knocked out most of the MTA podcasts that are on spotify at this point, and I've started listening to Runners without Limits. I feel like we are in a weird spot for rundisney-based podcasts with a 6mo gap until the next races, and pretty much all of them covered the debacle that was registration day. I tried listening to This American Life but I feel like I have to pay too close attention to it to also not have my pace all over the place.
I will say this: if you're working on tackling your first marathon and you are not a "fast" runner, be VERY SELECTIVE with your running podcasts. I tried a couple and the overarching theme that I got out them were that marathons should ONLY be done by people who have been running for YEARS, have done X number of races already, be running 30+miles/wk at a minimum, and are going to be RACING the distance. The notion that someone might want to do a marathon to just *finish* it never entered their conversations. I was so turned off by those podcasts and it really made me doubt myself for a while. The Disney-based ones seem to be a lot less elite-ist about the marathon distance.