This is probably dependant on/related to https://bugs.launchpad.net/mixxx/+bug/1321841 and https://bugs.launchpad.net/mixxx/+bug/671632
This is probably dependant on/related to https:/ /bugs.launchpad .net/mixxx/ +bug/1321841 and https:/ /bugs.launchpad .net/mixxx/ +bug/671632