No sound in Mac OS X virtual machine.
Guest OS misconfiguration / Parallels Tools are not installed properly.
Start the virtual machine (VM).
Connect Parallels Tools image:
- In Parallels Desktop menu bar go to Devices > CD/DVD 1 > Connect image...
- Navigate to Applications > Parallels Desktop > Contents > Resources > Tools > prl-tools-mac.iso
Open Finder and go to appeared Parallels Tools disk drive > right-click 'Install' image > Show Package Contents > Contents > Resources > Right-click 'Install.mpkg' > Show Package Contest > Contents > Packages and double-click 'Parallels Tools Audio'. Proceed with installation.
Open VM configuration > Hardware > Sound and make sure that 'Connected' box is checked and 'Input' and 'Output' options are set to 'Default'.
- Check the volume level on both sides: Host and VM.