So the idea is to have an 'Add Pack' button. The user would click it and be promoted a pop up window with an area to enter information such as a link address.
Lets say in this scenario that its an address the user would then put in an address that would link to where a pack zip file is waiting to be downloaded. After hitting enter the launcher downloads that zip pack file and puts it in the packs folder.
Just an idea let me know what you think, thanks :)