diff --git a/Makefile b/Makefile
index b7dc0271f..e625d373b 100644
--- a/Makefile
+++ b/Makefile
@@ -166,9 +166,9 @@ dist/converse-no-dependencies.min.js: src locale node_modules *.js
 dist/converse-no-dependencies.js: src locale node_modules *.js
 	$(RJS) -o src/build-no-dependencies.js optimize=none out=dist/converse-no-dependencies.js
 dist/converse-mobile.min.js: src locale node_modules *.js
-	$(RJS) -o src/build.js include=converse-mobile out=dist/converse-mobile.min.js
+	$(RJS) -o src/build.js paths.converse=src/converse-mobile include=converse out=dist/converse-mobile.min.js
 dist/converse-mobile.js: src locale node_modules *.js
-	$(RJS) -o src/build.js optimize=none include=converse-mobile out=dist/converse-mobile.js
+	$(RJS) -o src/build.js paths.converse=src/converse-mobile include=converse out=dist/converse-mobile.js optimize=none 
 
 .PHONY: jsmin
 jsmin: $(BUILDS)
diff --git a/docs/CHANGES.md b/docs/CHANGES.md
index 30fc5a760..6ac132429 100755
--- a/docs/CHANGES.md
+++ b/docs/CHANGES.md
@@ -33,7 +33,7 @@
 - Use lodash instead of underscore.js [jcbrand]
 - Case insensitive matching of moderation commands. [jcbrand]
 - Add `/subject` as alias to `/topic` [jcbrand]
-- `allow_chat_pending_contacts` now defaults to `true` [jcbrand]
+- `message_carbons`, `play_sounds` and `allow_chat_pending_contacts` now default to `true` [jcbrand]
 - Improved roster filter UX. [jcbrand]
 - Render the login form again upon authfail. [jcbrand]
 - New promises API: [waitUntil](https://conversejs.org/docs/html/developer_api.html#waituntil)
diff --git a/spec/converse.js b/spec/converse.js
index 8bfa267f7..5f793f2bf 100644
--- a/spec/converse.js
+++ b/spec/converse.js
@@ -324,11 +324,11 @@
         describe("The \"settings\" API", function() {
             it("has methods 'get' and 'set' to set configuration settings", mock.initConverse(function (_converse) {
                 expect(_.keys(_converse.api.settings)).toEqual(["get", "set"]);
-                expect(_converse.api.settings.get("play_sounds")).toBe(false);
-                _converse.api.settings.set("play_sounds", true);
                 expect(_converse.api.settings.get("play_sounds")).toBe(true);
-                _converse.api.settings.set({"play_sounds": false});
+                _converse.api.settings.set("play_sounds", false);
                 expect(_converse.api.settings.get("play_sounds")).toBe(false);
+                _converse.api.settings.set({"play_sounds": true});
+                expect(_converse.api.settings.get("play_sounds")).toBe(true);
                 // Only whitelisted settings allowed.
                 expect(typeof _converse.api.settings.get("non_existing")).toBe("undefined");
                 _converse.api.settings.set("non_existing", true);
diff --git a/src/config.js b/src/config.js
index 3cf0be3ca..9d82cec3a 100644
--- a/src/config.js
+++ b/src/config.js
@@ -19,7 +19,6 @@ require.config({
         "backbone":                 "node_modules/backbone/backbone",
         "backbone.browserStorage":  "node_modules/backbone.browserStorage/backbone.browserStorage",
         "backbone.overview":        "node_modules/backbone.overview/backbone.overview",
-        "converse":                 "src/converse",
         "eventemitter":             "node_modules/otr/build/dep/eventemitter",
         "jquery":                   "node_modules/jquery/dist/jquery",
         "jquery-private":           "src/jquery-private",
@@ -42,7 +41,7 @@ require.config({
         "utils":                    "src/utils",
 
         // Converse
-        "converse-mobile":          "src/converse-mobile",
+        "converse":                 "src/converse",
 
         "converse-core":            "src/converse-core",
         "converse-bookmarks":       "src/converse-bookmarks",
diff --git a/src/converse-core.js b/src/converse-core.js
index 7c09b3e67..9da11a50f 100755
--- a/src/converse-core.js
+++ b/src/converse-core.js
@@ -242,7 +242,7 @@
             jid: undefined,
             keepalive: true,
             locked_domain: undefined,
-            message_carbons: false,
+            message_carbons: true,
             message_storage: 'session',
             password: undefined,
             prebind_url: null,
diff --git a/src/converse-notification.js b/src/converse-notification.js
index ea42ef1c5..9af661222 100644
--- a/src/converse-notification.js
+++ b/src/converse-notification.js
@@ -34,7 +34,7 @@
                 show_chatstate_notifications: false,
                 chatstate_notification_blacklist: [],
                 // ^ a list of JIDs to ignore concerning chat state notifications
-                play_sounds: false,
+                play_sounds: true,
                 sounds_path: '/sounds/',
                 notification_icon: '/logo/conversejs128.png'
             });
@@ -104,7 +104,7 @@
                 // feature, but no browser currently supports it.
                 // https://developer.mozilla.org/en-US/docs/Web/API/notification/sound
                 var audio;
-                if (_converse.play_sounds && !_.isUndefined(Audio)) {
+                if (_converse.play_sounds && !_.isUndefined(window.Audio)) {
                     audio = new Audio(_converse.sounds_path+"msg_received.ogg");
                     if (audio.canPlayType('/audio/ogg')) {
                         audio.play();