Warning Crash happens in 15w42a, since the server is running on that version and not as stated in 15w44b, however I´m not allowed to report on 15w42a.

Playing both in Single and in Multiplayer, the game crashes when it has to produce certain zombie sounds.
Edit: Also crashes when trying to trade with villagers.
"Fixed" it by disabling the sound, but that´s nothing permanent, especially creepers without sound are annoying.
The game just freezes and crashes, Launcher producing following error message:
[13:01:55] [Thread-5/ERROR]: Error in class 'CodecJOrbis'
[13:01:55] [Thread-5/ERROR]: Ogg header not recognized in method 'readHeader'.
[13:01:55] [Thread-5/ERROR]: Error in class 'CodecJOrbis'
[13:01:55] [Thread-5/ERROR]: Error reading the header
There are no Mods installed, the soundfiles can be played easily (aka not corrupted) and redownloading didnt fix it. One of the logs doesnt show the usual crash message but just states that the soundsystem is shutting down
Steps to Reproduce:
1. Find Zombie
2. let it make it standard sound
3. if that´s not enough, hit it.