To configure audio for all Windows applications over RDP:
Click OK, then Connect to login to the VM.Start Remote Desktop Connection (type mstsc.exe on the command line).Change Remote Desktop Connection Settings for Windows 7 When you connect to the VM using RDP you can then run an audio program on the VM and have the sound redirected to the local computer. Sound card' in a VM, you must enable audio over RDP (Remote Desktop Protocol) on Windows server 2008 or 2008 R2 host system. In Hyper-V there is no way to emulate a sound card.
In some scenarios, such as test and application development, you may need to emulate a sound card in the VM (virtual machine).