I mentioned in a couple of places that I've been listening to Numenera actual play and picking up some thoughts that way. Ooh, poetry! Ahem. The one I've started with is The Roo Sack Gamers. They have a relatively small back catalogue, but with turns out to be because old episodes are shifted to Archive.org for hosting space reasons.
Numenera-wise, they've played through a couple of chapters (9 episodes at time of writing) in what's obviously a bit of an arc. I haven't picked up a clear indication of whether they're running prewritten stuff with added bits or largely homebrew content, though my instinct says the latter. I've found it pretty enjoyable to listen to, and because they're basically novices it's interesting to hear them working through rules issues and see their approach to the game. It seems noticeable that playing with lots of Effort and using high combat rolls to inflict penalties instead of extra damage makes the combat feel much more varied. They actually change their approach throughout the episodes (unconsciously, I think) as they sound out different playstyles, and talk about this a bit in ep 7ish.
Audiowise I found it good quality, very clear (very little cross-talk or ambient noise that I noticed) and pretty well-presented. Things like introducing yourselves at the start of episodes can make a difference to how easy things are to follow - I should probably think about that for our recordings... They also have a melodious array of what I would tentatively call southern US accents, but my expertise stops there.