+int touch_file(Glib::ustring path);
+
+Glib::ustring path_expand (Glib::ustring);
+Glib::ustring region_name_from_path (Glib::ustring path, bool strip_channels, bool add_channel_suffix = false, uint32_t total = 0, uint32_t this_one = 0);
+bool path_is_paired (Glib::ustring path, Glib::ustring& pair_base);
+
+void compute_equal_power_fades (nframes_t nframes, float* in, float* out);