ubuntu install realplayer

.rpm and .bin are supported in official website http://www.real.com/linux.
i use alien install realplayer.rpm ,it seems to should to config script ,and when installed ,it donnot work.
so .bin is success .
sudo chmod +x Realplayer11GOLD.bin
./bin Realplayer11GOLD.bin

then like this:
william@william-superstar:~/Desktop$ ./../RealPlayer/RealPlayer11GOLD.bin
Extracting files for Helix installation........................

Welcome to the RealPlayer (11.0.0.4028) Setup for UNIX
Setup will help you get RealPlayer running on your computer.
Press [Enter] to continue...


Enter the complete path to the directory where you want
RealPlayer to be installed. You must specify the full
pathname of the directory and have write privileges to
the chosen directory.
Directory: [/home/william/Desktop/RealPlayer]: /home/william/RealPlayer/

You have selected the following RealPlayer configuration:

Destination: /home/william/RealPlayer/

Enter [F]inish to begin copying files, or [P]revious to go
back to the previous prompts: [F]: F

Copying RealPlayer files...No write-permission to /etc/profile.d ...skip.
.Succeeded.
installing application icons resource...
installing document icons resource...
..........Succeeded.
.Configuring Mozilla...
Installing .mo locale files...
Setting selinux context...
/usr/share or /usr/bin no write-permission...skip.

RealPlayer installation is complete.
Cleaning up installation files...
Done.


now ,you should goto the directory where you install the .bin .and run the realplayer in terminal.
like following:
william@william-superstar:~/RealPlayer$ ls
Bin common install.log mozilla postinst realplay RealPlayer11GOLD.bin
codecs doc LICENSE plugins README realplay.bin share
william@william-superstar:~/RealPlayer$ ./realplay