--- rockbox.orig/apps/onplay.c	2010-10-19 15:20:19.737836400 +0700
+++ rockbox/apps/onplay.c	2010-10-27 11:52:49.664226700 +0700
@@ -1055,6 +1055,18 @@
 }
 MENUITEM_FUNCTION(set_startdir_item, 0, ID2P(LANG_SET_AS_START_DIR),
                   set_startdir, NULL, clipboard_callback, Icon_file_view_menu);
+#ifdef HAVE_TAGCACHE
+static bool set_start_tagcache(void)
+{
+    snprintf(global_settings.start_tagcache, 
+             sizeof(global_settings.start_tagcache),
+             "%s/", selected_file);
+    settings_save();
+    return false;
+}
+MENUITEM_FUNCTION(set_start_tagcache_item, 0, ID2P(LANG_SET_AS_START_TAGCACHE),
+                  set_start_tagcache, NULL, clipboard_callback, Icon_NOICON);
+#endif
 
 static int clipboard_callback(int action,const struct menu_item_ex *this_item)
 {
@@ -1112,6 +1124,9 @@
 #ifdef HAVE_RECORDING
                      || this_item == &set_recdir_item
 #endif
+#ifdef HAVE_TAGCACHE
+                     || this_item == &set_start_tagcache_item
+#endif
                         )
                         return action;
                 }
@@ -1174,6 +1189,9 @@
            &set_recdir_item,
 #endif
            &set_startdir_item, &add_to_faves_item,
+#ifdef HAVE_TAGCACHE
+           &set_start_tagcache_item,
+#endif
          );
 static int onplaymenu_callback(int action,const struct menu_item_ex *this_item)
 {
--- rockbox.orig/apps/settings.h	2010-10-19 15:20:19.796839700 +0700
+++ rockbox/apps/settings.h	2010-10-27 11:52:10.994014900 +0700
@@ -576,6 +576,7 @@
 #endif
     bool tagcache_autoupdate; /* automatically keep tagcache in sync? */
     bool runtimedb;           /* runtime database active? */
+    char start_tagcache[2*MAX_FILENAME+1];
 #endif /* HAVE_TAGCACHE */
 
 #if LCD_DEPTH > 1
--- rockbox.orig/apps/settings_list.c	2010-10-19 15:20:20.138859300 +0700
+++ rockbox/apps/settings_list.c	2010-10-27 11:57:34.064493500 +0700
@@ -1247,6 +1247,11 @@
 #ifdef HAVE_TAGCACHE
     OFFON_SETTING(0, runtimedb, LANG_RUNTIMEDB_ACTIVE, false,
                   "gather runtime data", NULL),
+#if (CONFIG_PLATFORM & PLATFORM_ANDROID)
+    TEXT_SETTING(0, start_tagcache, "start tagcache", "/sdcard", NULL, NULL),
+#else
+    TEXT_SETTING(0, start_tagcache, "start tagcache", "/", NULL, NULL),
+#endif
 #endif
 
 #if CONFIG_CODEC == SWCODEC
--- rockbox.orig/apps/tagcache.c	2010-10-19 15:20:20.230864600 +0700
+++ rockbox/apps/tagcache.c	2010-10-27 11:57:07.224958300 +0700
@@ -4462,11 +4462,11 @@
                 remove_files();
                 remove(get_user_file_path(TAGCACHE_FILE_TEMP,
                                 IS_FILE|NEED_WRITE, path, sizeof(path)));
-                tagcache_build("/");
+                tagcache_build(global_settings.start_tagcache);
                 break;
             
             case Q_UPDATE:
-                tagcache_build("/");
+                tagcache_build(global_settings.start_tagcache);
 #ifdef HAVE_TC_RAMCACHE
                 load_ramcache();
 #endif
@@ -4484,13 +4484,13 @@
                 {
                     load_ramcache();
                     if (tc_stat.ramcache && global_settings.tagcache_autoupdate)
-                        tagcache_build("/");
+                        tagcache_build(global_settings.start_tagcache);
                 }
                 else
 #endif
                 if (global_settings.tagcache_autoupdate)
                 {
-                    tagcache_build("/");
+                    tagcache_build(global_settings.start_tagcache);
                     
                     /* This will be very slow unless dircache is enabled
                        or target is flash based, but do it anyway for
--- rockbox.orig/apps/lang/english.lang	2010-10-25 09:47:38.787087500 +0700
+++ rockbox/apps/lang/english.lang	2010-10-27 08:14:42.847703600 +0700
@@ -2428,6 +2428,34 @@
   </voice>
 </phrase>
 <phrase>
+  id: LANG_SET_AS_START_TAGCACHE
+  desc: used in the onplay menu to set tagcache start directory
+  user: core
+  <source>
+    *: "Start Database Update Here"
+  </source>
+  <dest>
+    *: "Start Database Update Here"
+  </dest>
+  <voice>
+    *: none
+  </voice>
+</phrase>
+<phrase>
+  id: LANG_RESET_START_TAGCACHE
+  desc: reset the tagcache start directory
+  user: core
+  <source>
+    *: "Reset Database Root Directory"
+  </source>
+  <dest>
+    *: "Reset Database Root Directory"
+  </dest>
+  <voice>
+    *: none
+  </voice>
+</phrase>
+<phrase>
   id: LANG_TAGCACHE_FORCE_UPDATE_SPLASH
   desc: in tag cache settings
   user: core
--- rockbox.orig/apps/menus/settings_menu.c	2010-10-19 15:14:42.081523500 +0700
+++ rockbox/apps/menus/settings_menu.c	2010-10-27 11:55:45.909307300 +0700
@@ -80,12 +80,26 @@
 MENUITEM_FUNCTION(tc_import, 0, ID2P(LANG_TAGCACHE_IMPORT),
                     (int(*)(void))tagtree_import, NULL,
                     NULL, Icon_NOICON);
+static int clear_start_tagcache(void)
+{
+#if (CONFIG_PLATFORM & PLATFORM_ANDROID)
+    strcpy(global_settings.start_tagcache, "/sdcard");
+#else
+    strcpy(global_settings.start_tagcache, "/");
+#endif
+    settings_save();
+    splash(HZ, ID2P(LANG_RESET_DONE_CLEAR));
+    return false;
+}
+MENUITEM_FUNCTION(clear_start_tagcache_item, 0, ID2P(LANG_RESET_START_TAGCACHE), 
+                  clear_start_tagcache, NULL, NULL, Icon_NOICON);
 MAKE_MENU(tagcache_menu, ID2P(LANG_TAGCACHE), 0, Icon_NOICON,
 #ifdef HAVE_TC_RAMCACHE
                 &tagcache_ram,
 #endif
                 &tagcache_autoupdate, &tc_init, &tc_update, &runtimedb,
-                &tc_export, &tc_import);
+                &tc_export, &tc_import, &clear_start_tagcache_item
+                );
 #endif /* HAVE_TAGCACHE */
 /*    TAGCACHE MENU                */
 /***********************************/