I am the creator of Sn0wSong for Minecraft.
I am almost finished with a HUGE update to meet the new suite of SFX for MC 1.X. I am dropping this your way to let you know I give you full permission to use any and all of the resources found in my Sn0wSong resource pack.
If you want custom music, additional SFX, whatever…let me know and I will gladly provide…FREE! 
You don’t even need to credit me for what you use. I am happy to contribute wherever possible.