Question about sample rate of audio codec WM8731 on DE2

HI Amigo, thank you so much for asist me in this trouble.

I've followed these insctuction but the music is not playing.:(

1. I run under the nios console

nios2-configure-sof DE2_SD_CARD_AUDIO.sof

then I run the altera monitor and I select :

Configuration >> Configure system >> I select the PTF from the project,

I chosse cpu_0 processor and the .text and .data sections are in the epcs_controller .

I've search in all the project any code like C or ASM for play the waw but i doesn't found anything. (¿Do you choose any source file?) So, without selecting any file I had choosed

actions >> connector processor

Then I leave running the processor but nothing happends :S

The SD CARD was formated using mkdosfs, it's a 2gb from markvision

# mkdosfs -F 16 -R 1 /dev/sdc1.

Can you help me please?? Thank you