I own 2 xbox's.....one for the kids....and one for me.........I end up buying all the kids xbox pts which they buy map packs......can I share these map packs on the other xbox or even the one they download too?? My kids usually download on the other xbox that I use so they can use their map packs when they come on my xbox but I can't use them if I don't "JOIN" the game they are in. what can I do without having to buy them again ....it's stupid to have to buy 2 packs for one family when the one family has 2 xbox's !!!!