[req] Subsonic

Hi,

i installed subsonic on my readynas DUO.

My java Version is:

fes-a120d19nas:/var/subsonic# java --version
SableVM version 1.11.3
- compile date and time: 2005-04-16 09:50:59 UTC
- gcc version: 3.3.5 (Debian 1:3.3.5-12)
- 'real life brokenness' features enabled
- signal based exception detection
- copying garbage collection
- bidirectional object layout
- inline-threaded interpreter

I installed an old subsonic version (i think it was 2.7) and started it with ./subsonic.sh. After starting it the subsonic process is dieing and it writes into the log file:

fes-a120d19nas:/var/subsonic# tail subsonic_sh.log
java.lang.UnsupportedClassVersionError
   at java.lang.VMClassLoader.nativeDefineClass (VMClassLoader.java)
   at java.lang.VMClassLoader.defineClass (VMClassLoader.java:94)
   at java.lang.ClassLoader.defineClass (ClassLoader.java:673)
   at java.security.SecureClassLoader.defineClass (SecureClassLoader.java:108)
   at java.net.URLClassLoader.findClass (URLClassLoader.java:926)
   at java.lang.ClassLoader.loadClass (ClassLoader.java:360)
   at java.lang.ClassLoader$1.loadClass (ClassLoader.java:1285)
   at java.lang.ClassLoader.loadClass (ClassLoader.java:304)
   at java.lang.VirtualMachine.main (VirtualMachine.java:99)

Has anyone a idea why this error occours? Is this a java version issue?