Arduino Ethernet + AUDIO Please HElP

Hello everyone. I'm doing a project which manage audio through the Internet. To play .wav files I use this code: http://maxoffsky.com/maxoffsky-blog/how-to-play-wav-audio-files-with-arduino-uno-and-microsd-card/ But every time when I try to play .wav files I hear noise and music together. After then the L9 LED on my Arduino Ethernet is flashing ON and I can not play anymore until reboot. I tried to install tmrpcm.speakerPin = 3, 5, 6; but then I did not hear anything more. Please help!