Anonymity in Itunes shared files

[furiousfap]

So I'm stealing someones wireless internet with my macbook and have my itunes open. I turned off "share my library on my local network". However, I see their library on my itunes. Would they know that I am playing their music or even know that I'm using their internet?

 

[JNB]

So quit stealing someone else's access and the problem goes away.

 

[aristobrat]

If they look at their router, it'd be pretty easy for them to see that you're using their Internet.