+ * @return the absolute path to the directory in which
+ * the session stores audio files for Ardour 2.X.
+ *
+ * If the session is an older session with an existing
+ * "sounds" directory then it will return a path to that
+ * directory otherwise it will return the new location
+ * of root_path()/interchange/session_name/audiofiles
+ */
+ const std::string sound_path_2X () const;
+
+ /**
+ * @return the absolute path to the directory in which