The audio is not good. Can't distinguish the last two words.
I'm learning the language now. But I think that the phrase 'quid ad forum it' should be 'quid a forum it', right?
No, ad does not reduce to a. ab does that. Visually similar words so I am sure it causes confusion.
Quis a foro venit? -> 'Who is coming from the forum?'
Also it is quis ('who'), not quid ('what').