my itunes keeps saying connection timed out...?

I just purchased a new mac book pro, and i am trying to download my purchased songs from itunes. When it starts to download it will download maybe 10 at a time and then i get a pop up that says we could not download ...(name of one of the songs) because the connection timed out. Why does this happen and how can i fix it?

thank you in advance for all your help!