Trouble with ae674 files

Hello, 

 I'm a beginer in this topic. How can I change/rebuild evm.ae674 file from biospsp_03_00_01_00 audio example? I'm using LCDK6748, so I have to change PINMUX1 configuration from the audio_evmInit.c file to run this example. I change like this : 

 syscfgRegs->PINMUX1 = (savePinmux1 | 0x00000110); 

But this changes have no effect on my registers value in working project. What should I do ? 

Mirek