If the material you are trying to watch frequently buffers, then it means that you are not maintaining a fast enough connection to our servers to watch our content at the speed you selected. Try increasing your buffering rate in the player:

Windows Media Player 7 or above:

1. Open the Windows Media Player.
2. From the Tools menu, select, options.
3. Select ,Performance.
4. Under Network Buffering, select "Buffer."
5. Adjust buffering to "30 seconds of data."
6. Click "OK."
7. Close and reopen your web browser

RealOne Player

1. Open the RealOne Player.
2. On the menu bar, select "Tools" and then scroll down to "Preferences."
3. In the Preferences window, select the + icon next to Connection.
4. Select the "Playback Settings" option.
5. Locate "Buffered Play" under Playback Settings.
6. Adjust buffering to "30 seconds of the clip before playing."
7. Click "OK."
8. Close and reopen your web browser