Does iTunes charge you twice for every time you re-download a song?

I buy music from my account in my iphone and Mac. I let my cousin also use my account to re-download the music I bought using iCloud, does I tunes charge you for everyone your singing music from one account?
I've been wondering because I see iTunes charges on my bill all the time for only buying 3 songs in a day.

Yes dear. But I'm not completely sure about that.

No. Not as long as you are re-downloading it using the cloud you won't be charged.

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