I just installed the new version today on Linux Mint, which is a derivative of Ubuntu.
First things first -- The two versions are not backwards compatible and don't interfere with each other. So you could technically have them both installed, no problem.
Second thing -- if you're running Ubuntu, you don't want to install from source. Take advantage of the .deb packaging system! The newest version is in the Intrepid repositories. So technically you could point your sources.list to that repository and install the newest version.
However, you have to be extremely careful with that, as at that point you are upgrading packaged software to a new, "alpha" version. While Banshee may not be dangerous in that stage (and its not), some of the other shared libraries it needs might be. I haven't had stability issues YET, but it could happen.
All that said, its still entirely possible.
1) Make a backup of your sources.list
Code:
sudo cp /etc/apt/sources.list /etc/apt/sources.list.sav
2) Edit your current sources.list
Code:
sudo nano /etc/apt/sources.list
Find the lines that look like this:
Code:
deb http://archive.ubuntu.com/ubuntu hardy main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu hardy-updates main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu hardy-security main restricted universe multiverse
and change them to this:
Code:
deb http://archive.ubuntu.com/ubuntu intrepid main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu intrepid-security main restricted universe multiverse
3) Fire up Synaptic, click reload
4) Install Banshee 1.0
5) Put your old sources.list back in place:
Code:
mv /etc/apt/sources.list.sav /etc/apt/sources.list
6) Reload the configuration by firing up Synaptic again and clicking reload, or:
Code:
sudo apt-get update
I had you put the original config file BACK because you don't want to keep pulling down the Intrepid release, until its finished.
Enjoy, good luck, and be careful.