Mr. Steinberg - Thanks for your postings, and welcome to Piano Society! (I assume you're new around here?)
You have an impressive background, and you chose a nice sampling of music here. I'm just a member here, FYI, and the admins will likely have more definitive comments.
I enjoyed the Aria recording, and you had some nice moments throughout. I heard a few slips, but live performance so understandable. It did seem a little tentative to me in places however, but others here are more versed in Bach than I am and may feel differently.
Did you mean to post the subsequent performance of Beethoven's Sonata Op. 13 (1st movement)? Was that you playing as well? I don't want to be too discouraging here, but I'm much more familiar with this piece and really feel it was not ready for performance. But I'm not sure if this is you and/or you even wanted feedback on this one so I'll withhold details for now.
I'm also very familiar with the Waldstein Sonata, and IMO this was a very rough recording. It also sounds like possibly a live performance (?), so perhaps I'm being too tough, but as you know this is a very complex piece requiring great technical prowess and musicality. And it's one everyone knows and loves, and therefore opinions are abundant!
My quick thoughts:
It begins WAY too heavy-handed - supposed to be pianissimo.
Dynamics throughout need a lot more attention. Range is very limited.
The phrasing and tempo are uneven off and on throughout.
There are just so many mistakes, especially in the runs and arpeggios. I think you could certainly hit all the notes, but need a lot more practice at much slower tempo to get this under your fingers.
So overall I [personally] found these postings a very mixed bag. Some of it was nice, and you obviously have a lot of talent. On the fast stuff, please consider much more meticulous, slow practice to get the notes completely within your grasp. Then think a lot about the musical "message" you (and the composer) are trying to communicate. Don't rely on your technical abilities too heavily - without carefully planned phrasing and dynamics it's all pointless anyway!