Hello, I’m recently learning DE2 audio player demo. The demo is used to play 48kHz audio. I want to turn it into playing 8kHz music. I know that I can change the sample rate in Audio_0.v, as well as wm8731 the sample rate control. But after setting them correctly, the music which on sd card can not be played, accurately to say, although the segments can display the start audio sector, but can not play the 8kHz audio file，what's more the segments don't change. Thanks in advance for anyone's help.