2. Open Terminal (from this point on, you must have admin rights).
3. Type sudo su (get the administer privilege)
4. Type sudo chmod +x RealPlayer11GOLD.bin
5. Type sudo "./RealPlayer11GOLD.bin"
6. Follow prompts. It'll start the installer. Do as it instructs and hit Enter.
7. It'll ask for the install path. Default is fine and hit enter.
8. It'll ask for a confirmation of install path. Press F to Finish the install.
9. It copies files, installs icons, etc. When you get the prompt, it's done.
Congrats! You have just installed RealPlayer 11 on Ubuntu. Easy, huh? 
To launch the app, go to Applications > Sound & Video > RealPlayer 11.
If that doesn't work, open Terminal again and type ./realplay (in default directory /opt/real/RealPlayer) .
Follow setup prompts and RealPlayer should be launched. It may
forward a tab in FireFox to say if RealPlayer is up to date or not.
Enjoy! PM if there any problems or if u found it useful. Just tested it and it works for me!
PS: if the above has something wrong, install it again maybe solve your problem... try...