This TuT walks through how to transfer DLC from one account to another or from one hard drive onto another.

to move from one account onto another im sure as long as its on the same console all you need to do is head to:
1. Marketplace.
2. The DLC you want.
3. Download it (It should be free because you already bought it on that console).


What you need:
USB Drive


Step 1.
Insert the USB drive into your Xbox and configure the USB.

Step 2.
System Setting's

Step 3.
Storage Device

Step 4.
Go to Hard Drive

Step 5.
Find the DLC you want to transfer and select move/copy

Step 6.
Move/copy to your USB

Step 7.
Once the DLC is on your USB put the USB into your other console

Step 8.
System Setting's

Step 9.
Storage Device

Step 10.
And select USB

Step 11.
Find the DLC on your USB

Step 12.
Select "Move" and move in onto your hard drive..

I Do Hope This Helped.. Any Questions Feel Free To Ask!

iMutant