I've found several snippet promotional tools but none seem to get the listeners to a place they can subscribe on iTunes.
- I've been searching for similar solutions and came across this on Reddit. Alternatives Wavve.co https://headliner.sparemin.com (I'm checking this out. It looks pretty cool. Audiogram is much easier and designed for sharing. This one offers more functionality, and I doubt that it is optimized for the socials. Nevertheless worth checking out. I haven't read anything about pricing yet, so could be free for a while)