When I start Minecraft almost all of the sounds are missing. The only sounds that I have found that work are breaking and placing sounds. After awhile I updated the LWJGL libraries to version 2.9 but that did nothing to fix the missing sounds.
Environment
Windows 7 Professional 64-bit, Java 7, LWJGL 2.9, using original launcher.
40th Duplicate of MC-11030, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.