Let's say there's an account that posts audio or video clips on the regular, and you want to download everything automatically so you can watch it later offline. Having an RSS feed for that npub will allow you to use any podcast player to do just that.
Discussion
Let's use nostr:nprofile1qqsvf646uxlreajhhsv9tms9u6w7nuzeedaqty38z69cpwyhv89ufcqpzamhxue69uhhyetvv9ujucm4wfex2mn59en8j6gpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg5waehxw309aex2mrp0yhxgctdw4eju6t0t25cfd as a concrete example. If you punch his npub into castr dot me and add the RSS feed to your podcast app, you'll see something like this: 
It's all very simple, and as a content consumer it's very convenient.
As a content creator you can in theory create a Podcasting 2.0 podcast with show notes and value splits and everything, without having to deal with the feed creation yourself. You just post to nostr, and that's it. That's what I tried with nostr:nprofile1qqsfhhjzzjgl86k34ssm68gpvea2h9rlfswy4mv8vfx0yfemqm9q22cpramhxue69uhkummnw3ezuetfde6kuer6wasku7nfvuh8xurpvdjszrthwden5te0dehhxtnvdakqzrmhwden5te0dehhxarj9ekk7mgmkwtv0 & while imperfect, it's already working.
https://castr.me/npub1n00yy9y3704drtpph5wszen64w287nquftkcwcjv7gnnkpk2q54s73000n
Very clear! Now I understand.
How cool 😍
Ok thank you 🤝