I have problem with UDP send and UDP receive

I tried to send my audio file(.wav) in simulink with udp send and receive this with the UDP receive. and the data doesn't transmit, when i connect scope between the audio file and UDP send i see good sine the other scope connect between UDP recevie and some block, i dont see any sine wave. some can help me and say to me what i need to do???:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: ( UDP send :'my comuter ip,local ip port: '2500',,,) (UDP recevie:'0,0,0,0,'(Remope ip accept to all),local ip port:'2500')||||| any changes in the ip doesnt change my problem)