4 JPGs, which can easily be created by making small (layer position and alpha value) changes to the included .XCF.
Attribution Instructions:
Remix of TRaK's textures
Copyright 2012 Iwan Gabovitch <qubodup@gmail.com>
Original TRaK4 textures
Copyright 2011 By Georges 'TRaK' Grondin drognin@gmail.com http://trak.mercenariesguild.net
Comments
Are all the licenses you selected compatible with the MIT license?
MIT is a permissive license, it allows relicensing as long as the original disclaimer and copyright notice is kept intact. I think its best to include it in attribution requirements. Check the following:
to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software
Thanks for clarifying, cemkalyoncu! Bart, is this OK?