I managed to find the log and here is the error:
The error log wrote:[Loaded net.sourceforge.subsonic.domain.Player from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/domain/Player.class]
[Loaded org.springframework.beans.propertyeditors.StringArrayPropertyEditor from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/spring-2.0.jar]
[Loaded org.springframework.beans.factory.support.AutowireUtils from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/spring-2.0.jar]
[Loaded org.springframework.beans.factory.support.BeanDefinitionValueResolver from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/spring-2.0.jar]
[Loaded org.springframework.beans.SimpleTypeConverter from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/spring-2.0.jar]
[Loaded net.sourceforge.subsonic.dao.schema.Schema from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema.class]
[Loaded net.sourceforge.subsonic.dao.schema.Schema25 from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema25.class]
[Loaded net.sourceforge.subsonic.dao.schema.Schema26 from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema26.class]
[Loaded net.sourceforge.subsonic.dao.schema.Schema27 from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema27.class]
[Loaded net.sourceforge.subsonic.dao.schema.Schema28 from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema28.class]
[Loaded net.sourceforge.subsonic.dao.schema.Schema29 from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/classes/net/sourceforge/subsonic/dao/schema/Schema29.class]
[Loaded org.apache.log4j.spi.ThrowableInformation from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/log4j-1.2.9.jar]
[Loaded org.apache.log4j.spi.VectorWriter from file:/usr/local/jakarta/jakarta-tomcat-5.5.9/webapps/subsonic/WEB-INF/lib/log4j-1.2.9.jar]
Dec 6, 2006 2:58:53 PM org.apache.catalina.core.StandardContext start
SEVERE: Error listenerStart
Dec 6, 2006 2:58:53 PM org.apache.catalina.core.StandardContext start
SEVERE: Context [/subsonic] startup failed due to previous errors
Dec 6, 2006 2:58:53 PM org.apache.catalina.core.ApplicationContext log
EDIT: Okay I fixed the problem. I had to create the /var/subsonic directory manually.