5.1 beta issue (ubuntu)

[beninho]

Problem Description: Transcoder en playback issue
Troubleshooting Steps: I haven't tried anything because I don't know where to start...
Playback Application and version: Standard Subsonic Web Interface + Jamstash
Subsonic Version:5.1 beta1
Server Version: java version "1.6.0_33"
OpenJDK Runtime Environment (IcedTea6 1.13.5) (6b33-1.13.5-1ubuntu0.14.04)
OpenJDK 64-Bit Server VM (build 23.25-b01, mixed mode)
Hardware Platform: Ubuntu
Java Memory Limit: 515mb

In the end - I could playback some song - but the logfile spit out a bunch of erros.

http://paste.ubuntu.com/9660038/