Google is your friend.
Find the amule packages in the raspbian wheezy repository and download them with wget.
Then sudo dpkg -i them.
You should really understand what you are doing before doing it. So I will not post a step by step copy/paste tutorial.
If packages are not in a distribution anymore, normally this is for a reason.
Also the method described here and the one in the other thread can lead to problems with the system later that will be hard to troubleshoot if even you do not know what you really did.