From https://bugs.launchpad.net/catfish-search/+bug/1464487 In Wily or any ubuntustudio 15, When I search with catfish file search and I find the file I want, when I click right and select Show in file manager, Audacious opens not the file manager
Sean Davis referenced this bugreport in commit f2bfb28debbc033d45ea451bbab016f60ade5e24 Force directories opened in Xfce to use the preferred file manager (bug #14483) https://git.xfce.org/apps/catfish/commit?id=f2bfb28debbc033d45ea451bbab016f60ade5e24
I suspect the issue was related to incorrect mime type configuration. The above commit forces directories to be opened with the preferred file manager in Xfce.