Hi, I tried to install jack_mixer, but when I'll want to start it I'll get: jack_mixer PHAT audio widgets not found, some features will not be available Traceback (most recent call last): File "/usr/local/bin/jack_mixer", line 42, in ? from serialization_xml import xml_serialization File "/usr/local/bin/../share/jack_mixer/serialization_xml.py", line 23, in ? import xml.dom.ext ImportError: No module named ext ... Dirk