How do I get downloaded tracks into RCT3?

I'm sorry if this sounds like a dumb question, but when I download a RCT3 track from the exchange, where do I put the file/what do I do to it so that I can get it in the game.

If it helps, I own the Mac version of the game.

Man, it's been years since I've opened RCT3, and I don't know much about Macs either. Can you navigate to the folder that RCT3's files are located? There might be a folder for tracks that you can move the file into like you would for Nolimits.

[TTD03]

I remember on windows the parks folder was either in Program Files or in your Documents.
Not sure for Mac.

Man I haven't touched rct 3 since 2011 and I'm having urges to play it