Congrats on the switch to Ubuntu. To clarify your options:

1) You can install AVLinux as a separate Linux OS, parallel to your existing Ubuntu. You would then boot into either Ubuntu or AVLinux as needed. It is not uncommon at all to run more than one version of Linux on your computer, and simply boot into the one you wish to use. You will need to resize the existing partition(s) to create room for the AVLinux – back up anything important first (onto a USB stick, etc.) as resizing partitions is a bit touchy. (There are many web guides on resizing partitions and dual booting multiple versions of Linux.)

2) You can not use AVLinux at all and instead install most of the same applications in your Ubuntu install. For example, you can simply do a sudo-apt get install rakarrak or sudo apt-get install ardour to install those programs. This should allow you to start using them immediately. (You will also need qjackctl to set up Jack.)

The advantage of use AVLinux as its own stand alone OS is that it has a great many audio and recording applications not only pre-installed, but also the environment itself has been tuned for optimum performance. Everything “just works” out of the box and works very well.

While I don’t have a Natty server instance to verify with, you should be able to find a PPA out in the wild that has Sun Java, perhaps for example: http://www.ubuntugeek.com/install-jre-in-ubuntu-11-04-natty-using-ppa.html

Since I originally wrote this, Oracle is retiring the “Operating System Distributor License” for Java (DLJ), which means Linux distributions will no longer make Oracle-Java available as native packages. Thus, your only option will be to get it from a 3rd party / PPA repo. (You can read more about this at: http://timelordz.com/wiki/Oracle_Java )

The good news however is that OpenJDK7 will be the reference implementation, and as things progress OpenJDK7 should work quite well. You might even just want to try going that route if it fits your needs.

Cheers,

error adding telesec.de/deutsche-telekom-root-ca-2.crt
failed (VM used: java-6-openjdk).
dpkg: error processing ca-certificates-java (–configure):
subprocess installed post-installation script returned error exit status 1

I’m trying to get the Natty Server Repo to install Sun Java, but no luck.
How Could I make my Tomcat work??
Any Ideas??
It seems that it has been removed:
sudo aptitude install sun-java6-jdk
No candidate version found for sun-java6-jdk
No packages will be installed, upgraded, or removed.

Cheers, thanks for your feedback