Click the Advanced Tab. Clice the Settings button. Click either Disable 16-bit sound or Disable custom sampling rates to modify the way your player and sound card interface. You may need to play with the settings to see which sounds best. Verify that the bandwidth field in the Connection tab of the Player's Preferences window is set to 28.8 Kbps modem or faster.
Content providers have to decide which portion of the clip to emphasize - audio or video.
This is a trade-off process to ensure the best quality playback. However, since video is very resource intensive, very few video clips contain stereo sound. For additional sites containing RealAudio or RealVideo content, please visit RealGuide.