Subsonic 5.3beta2 Jukebox on Ubuntu 14.04

I've seen a few other threads regarding similar issues, but I've tried everything I can think of and still can't get audio to play from the server using Jukebox.
The steps I've done so far:
1. Added -Djavax.sound.sampled.SourceDataLine=#HDMI [plughw:0,3] to the ${JAVA} command in the /usr/bin/subsonic script on the line before the -Djava.awt.headless=true.
2. Added the Subsonic user (subsonic) to the audio group
3. I tried changing my default PulseAudio device to be the HDMI, but from what I can tell it appears to already be (I can hear sounds when using "mplayer -ao pulse test.mp3".
The log does not appear to have any real information regarding what is happening, but I do notice this line when starting a track with a jukebox player:
Opened line org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine@468a28b0
I'm assuming this is some kind of clue as to what's happening, but I admittedly can't decipher what to do with that line.
Any thoughts?
The steps I've done so far:
1. Added -Djavax.sound.sampled.SourceDataLine=#HDMI [plughw:0,3] to the ${JAVA} command in the /usr/bin/subsonic script on the line before the -Djava.awt.headless=true.
2. Added the Subsonic user (subsonic) to the audio group
3. I tried changing my default PulseAudio device to be the HDMI, but from what I can tell it appears to already be (I can hear sounds when using "mplayer -ao pulse test.mp3".
The log does not appear to have any real information regarding what is happening, but I do notice this line when starting a track with a jukebox player:
Opened line org.classpath.icedtea.pulseaudio.PulseAudioSourceDataLine@468a28b0
I'm assuming this is some kind of clue as to what's happening, but I admittedly can't decipher what to do with that line.
Any thoughts?