No Sound After Sp1/300Er?

Hey guys just wondering if anyone knows whats going on .

First off i have engine sound , which is all 

No sound for -

-Buttons and knobs (clicking sound)

-No APU sound (Power Up , Running , Shutting down)

-No V1,VR,V2 call out sounds 

-No flap movment , gear sounds 

Basicaly the only sounds off the A/C is the engines ?

Im using beats by dre headphones since no speakers but they worked perfect before SP1/300ER

Can anyone please help ? 

Thank you 

David Sullivan