1. Copy the file subsonic.war to <TOMCAT_HOME>/webapps
2. Start or Restart Tomcat
3. Point your web browser to
http://localhost/subsonic (or
http://localhost:8080/subsonic if you installed Tomcat on port 8080.)
4. Logon with username admin and password admin. You should change the password immediately.
5. Subsonic will attempt to create the directory c:\subsonic (on Windows) or /var/subsonic (all other platforms). This will fail if the user running Tomcat doesn't have the necessary privileges. In that case, create the directory manually, and make sure that Tomcat has write access to it.
here is the link where these instructions can be found
http://subsonic.sourceforge.net/download.htmlgood luck