Ah, I believe you could just download it from Safari and then drag it to a osu! skin folder, and then open osu! with Wine. I've only used Wine a couple of times so sorry if that isn't the caseastralgirl17 wrote:
Thanks for all the help. I found that my file database (Finder) doesn't have a physical osu! folder. I looked around a bit, then found that the osu! folder was installed right into the game itself, in a Mac application called "Wine", that is attached to osu. I finally found the program folder, but I'm still not used to Wine, so I don't know how to download things into said program.