The setup
Headless Debian Wheezy (Newest Base image from odroid.us):
http://odroid.us/odroid/odroidu2/debian/
Install openjdk-6
apt-get install openjdk-6-jre-headless
Download Debian package and follow instructions
http://www.subsonic.org/pages/installation.jsp#debian
Enable transcoding
apt-get install ffmpeg
sudo rm /var/subsonic/transcode/ffmpeg
sudo ln -s /usr/bin/ffmpeg /var/subsonic/transcode/ffmpeg
(This is required because built-in ffmpeg version doesn’t work properly on ARM.)