The error message could probably be better (and include a hint what to do), but:
http://wiki.xmms2.xmms.se/index.php/FAQ#While_trying_to_start_xmms2.2C_I_get_ERROR:_Could_not_create_default_configfile.21.21 anders -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]