Don't know if there is any sound on the game, but I couldn't hear any, this is the game I played the most from the jam until now, it gets a little bit repetitive after a time, but it's fun, solid work!
Thanks for the feedback! Out of curiosity, do you happen to know what version you were playing? We were able to directly test the Win32, Linux 32, and Linux 64 versions and it sounds like a big bug especially since sound was such a big part of the experience as we made it.