Here is a link to the Dev log file: https://dl.dropboxusercontent.com/u/10679993/13w21aError.txt
There are notable errors regarding sound initalization as well as a null pointer somewhere in there as well. The null pointer did not crash Minecraft.
Edit: I should note that the sound stopped working as soon as I created a new test world. It was working fine in the menu.
Related issues
Comments


@Tails: Mine is not a duplicate because his occurs when he inserts a CD into a Jukebox. My sound stops working as soon as a new world is created.

Client> ERROR MESSAGE:
Client> minecraft:sound/piano3.ogg
That's the standard Minecraft music which randomly plays, also causes MC-16150.

There's no sound in general in the new snapshot Tails.
Duplicate of MC-16150, please use the search function to see if your bug has already been submitted. Currently over 56% of tickets are being closed as duplicate.