How do i get azure flute?

it is not really possible

You may now catch the highest leveled Pokemon in the game, The Legendary Pokemon Arceus.

it is an event in 2010 but i can give you the cheat code (note this cheat only works for the DS) 94000130 fcff0000 b21c4d28 00000000 b0000004 00000000 0000aa3c edb88320 2000aa68 0000000a d2000000...

The easiest way is action replay, because the event to get it hasn't come out in America yet. another way is to get some one with action replay to trade it to you via wireless connection. They will...

Use it to gain access to Arceus, the Alpha Pokemon, #493