In the Galbadia Hotel site, when I click in MP3, I have to download each song one by one, is there a way to download all of them at once? If there isn't, why is this? Some games have many songs.

Can a function like this be there?

And if this thread is not for here, sorry.

There is a function like this already in place. You need to earn points by getting friends and people to click the links in your User CP.

When you have 20 points, you can can buy 1 days worth of mass downloading which removes the extra page you're brought to when usually downloading.