FeatherCloud Ultra Resource Pack for Minecraft Frostburn update version that added new blocks and some new sounds.
FeatherCloud Ultra Resource Pack Screenshots
How to install:
Download links for FeatherCloud Ultra Resource Pack:
https://minecraftlucky.com/dowload/file-9255
http://www.4shared.com/zip/bUqLZkDKce/FeatherCloud-Ultra-17.html