File Sharing App

Hi guys!

I'm looking for a file-sharing app, but not like TeamViewer or stuff like that. Is there an app, like, just Finder and all files I have on my mac?
Something like that + files.

So basically I need an audio player to play music from Mac. Those audio files are not in iTunes and I don't really want to put them there.

That's just what I wanted! Thank you so much, Brian!