Compare the window's contents with sound card driver descriptions in the sound card documentation. Older sound card drivers. If the installed driver is more than six months old, it may not be compatible with RealAudio or RealVideo. Please update the sound card driver on your system. RealAudio Player and RealPlayer are designed to take advantage of the latest advances in driver technology.
Older drivers can cause unexpected errors.
Driver updates are usually available for free download from manufacturers' Web sites. The drivers are usually updated every few months. After installing the drivers, be sure to reboot your computer so the configuration changes take effect. If the above actions fail to correct the problem, it is recommended that you contact the sound card manufacturer's technical support department to have your system's configuration investigated further. Incorrect permissions on the audio device.