Lately I'm experiencing problems when playing music both on my office PC and on my home. My office PC is x64 bit while my home PC is x86. What they have in common is an NVidia card (7300 on my home PC while 9600 on my Office PC) and MoBo integrated Realtek Sound Chip. The systems are up-to-date, drivers are updates via Automatic Updates. The choppy sound appears after I resume the computer from sleep. If I reboot the comptuer, the sound will be okay until I sleep it again. Any suggestions?