Enable sound in your Vmware
Open the file "Xubuntos 2.1.vmx" from Virtual OS using any text editor. Put the following lines at the last part of this file sound.present = "TRUE" sound.virtualDev = "es1371" sound.fileName = "-1" sound.autodetect = "TRUE" Save your file. Open your OS. I think you can enjoy sound in your Vmware machine now. Good Luck.