You can only download it on the PS Network store or buy it from a store.
You get free download content with it
You cant but you can copy it
From the Playstation Store
No.
While it is free at the Playstation Store you only have to download it if you want the costume
You could download it as a free game as part of the customer appreciation program
yes. you have to download everything that is not on the game disc although not everything is from the Playstation store
no you can not
It is available for download for $1.99 from the Playstation Store
While it was part of the customer appreciation program it is no longer available for a free download and must be purchased
You purchase them or download free items from the Playstation Store
LittleBig Planet already has Bioshock costumes, you can download them of the PlayStation Store