What files can GPT 4 read?

Hi everyone, new to the forum here. I’m just curious as to the limitations of GPT 4’s file reading abilities? When I opened the file explorer I saw every file, and not just images or pdf’s, but before I try anything I just want to ask if this means it can actually read all these files or if it’s just for clarity? It’d be really cool if I could show GPT 4 some music just to see what it does with it, but I also imagine it isn’t that advanced yet.
I have Googled this first, but all I got was a redirection to a forum post here about a different problem. If there’s a list of readable files anywhere, feel free to redirect me, and sorry if this question’s been asked before but I did search the forum just to make sure this isn’t a duplicate thread either.
Thank you to anyone who helps.