” besides for it being a copyright infringement”
Unless its a Purim prank, it is total עם הארצות ! Torah is Hefker and ANYONE is allowed to repeat Shiurim. You only have the copyrights (if!) on the recordings.
Aderabeh – Rav Avigdor Miller would have wanted his shiur to be publicized in any way possible.
To “copyright” torah in such manner is a Bizoyan!
What’s next ? Am I allowed to repeat a shiur from Rav Elyashiv etc…