<note important>This guide assumes you have installed Ubuntu 15.04 and need a new Serviio install.</note>

<note warning>The new Serviio 1.9 requires Java 8.  The old Serviio 1.4 required Java 7</note>

Update:  If you are interested in installing the newest version than go to http://serviio.org/download to see which is the newest version at the time.  As of Nov 27, 2017 the newest version is Serviio 1.9    

Ubuntu 15.04 adds back ffmpeg, so there is no need for an extra PPA. Install required software if not already installed:
<code>sudo apt-get install ffmpeg
sudo apt-get install dcraw
</code>

Install Java 8. You can tell which, if any, versions are installed via:
<code>dpkg --get-selections | grep jre
</code>

You may see openjdk-7-jre. If you see both openjdk-7-jre and openjdk-8-jre, check which is the default version via:
<code>java -version
</code>

If openjdk-8-jre is installed and "java -version" yields "1.9.0_xx", you are done. If Java is not installed or only Java 7, run:
<code>sudo apt-get install openjdk-8-jre
</code>

If both Java 7 and 8 are installed, you may have to adjust the default via update-java-alternatives or edit scripts to specify the full path, e.g., /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java.

There are various ways to install Serviio, but this installs it in /opt and runs it as user serviio. The useradd option -r creates a system account and does not create a home directory. This will result in warnings in serviio.log, but there seems to be no ill effect. The first line logs in as root to make a few things easier:
<code>sudo -H bash
useradd -r -s /bin/false serviio
mkdir -p /opt
cd /opt
wget http://download.serviio.org/releases/serviio-1.9-linux.tar.gz
tar zxvf serviio-1.9-linux.tar.gz
rm serviio-1.9-linux.tar.gz
ln -s serviio-1.9 serviio
chown -R root:root serviio-1.9
cd serviio-1.9
mkdir log
chown -R serviio:serviio library log
</code>

Use your favorite text editor and create /lib/systemd/system/serviio.service with:
<code>
[Unit]
Description=Serviio Media Server
After=syslog.target local-fs.target network.target

[Service]
Type=simple
User=serviio
Group=serviio
ExecStart=/opt/serviio/bin/serviio.sh
ExecStop=/opt/serviio/bin/serviio.sh -stop
KillMode=none
Restart=on-abort

[Install]
WantedBy=multi-user.target
</code>

Lastly, start serviio and have it run automatically at boot via:
<code>
systemctl daemon-reload
systemctl enable serviio
systemctl start serviio
</code>

Now, launch the configuration console by typing the following into the Terminal
<code>
sudo /opt/serviio-1.9/bin/serviio-console.sh 
</code>