Since the RealPlayer 11 package is already available in the ppa:michael-gruz/backports, you can proceed as follows:
- Create a personal PPA using your Launchpad account.
- Go to ppa:michael-gruz/backports and access
View package details > Copy packages.
- Select the desired package (say, the one for
Natty) and copy it to your personal PPA. Change
Destination series to whatever you need (say,
Quantal). Ensure that
Rebuild the copied sources is selected, which will allow the binaries to be built using the available libraries on the chosen distro.
These instructions are generic and will work for any package that is already available on a Launchpad PPA, and for any distribution currently supported by Launchpad. They can fail, especially if the chosen distribution does not provide a needed library or a specific version of a library.
But it seems to work in this case. For proof of point, check out the
realplay that I copied to my testing PPA. You can check that the package was built against
View package details in the
Series column. (This seems to have worked for the
i386 build, but NOT for the