Glad you liked the game! Thanks for the heads up, I'm not too sure about the whole attribution thing, would love some advice on what I should I be doing differently.
No problem. Normally (as I understand it) attribution should include the name of the work, the creator of the work, and the license the work is under. However, in the case of Kevin Macleod, he has a specific way he wants to be attributed, like so:
Take the Lead Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/