1. Download and install Taverna Workbench 2.3.0 from http://www.taverna.org.uk/download/workbench/2-3/ 2. Copy the additional libraries in the "lib" directory (somtoolbox_full.jar and weka-3.6.6.jar) to the "lib" directory of your local Taverna installation - on a Linux, this is ~/.taverna-2.3.0/lib - in Windows7 to C:\Users\%USER%\AppData\Roaming\taverna-2.3.0\lib 3. Start Taverna; For Taverna compability reasons, please use a Java version 1.6 (http://www.mygrid.org.uk/dev/issues/browse/T2-1985) 4. Open the process "MusicClassification.t2flow" 5. Run the process, confirming the warning messsage