Missing/Lagging Audio after 5 minutes of Play

[adamvan101]

Title: Missing/Lagging Audio after 5 minutes of Play

Version: 3.1.2

OS: MacOS Mountain Lion/Windows 7

Java Version: 7

Description of Problem:

Everytime I play, in about 5 minutes the audio starts to disappear from certain things (breaking blocks, mob sounds, machine sounds). However, my jetpack always sounds, my fall damage always sounds, doors/chests work.

Occasionally some of the sounds that should have played will play 20 minutes later, but the current sounds are still not working. I can fix this by restarting the Tekkit launcher, but that's it. This happens on both SMP and singleplayer.

Any ideas?

Error Messages:

Error Log:

[profjb]

Yes turn Matmos off by pressing f7 if that dosent work then completely nuke your tekkit and technic launcher and folders and clear the cache that is the only logical solution. :L