diff --git a/ext/bg/js/options.js b/ext/bg/js/options.js
index 2089cc53..75f39d24 100644
--- a/ext/bg/js/options.js
+++ b/ext/bg/js/options.js
@@ -26,6 +26,7 @@ function formRead() {
         const optionsNew = $.extend(true, {}, optionsOld);
 
         optionsNew.general.audioPlayback = $('#audio-playback-buttons').prop('checked');
+        optionsNew.general.audioVolume = $('#audio-playback-volume').val();
         optionsNew.general.groupResults = $('#group-terms-results').prop('checked');
         optionsNew.general.softKatakana = $('#soft-katakana-search').prop('checked');
         optionsNew.general.showAdvanced = $('#show-advanced-options').prop('checked');
@@ -111,6 +112,7 @@ $(document).ready(() => {
 
     optionsLoad().then(options => {
         $('#audio-playback-buttons').prop('checked', options.general.audioPlayback);
+        $('#audio-playback-volume').val(options.general.audioVolume);
         $('#group-terms-results').prop('checked', options.general.groupResults);
         $('#soft-katakana-search').prop('checked', options.general.softKatakana);
         $('#show-advanced-options').prop('checked', options.general.showAdvanced);
diff --git a/ext/bg/js/util.js b/ext/bg/js/util.js
index d1099262..78258c97 100644
--- a/ext/bg/js/util.js
+++ b/ext/bg/js/util.js
@@ -85,6 +85,7 @@ function optionsSetDefaults(options) {
         general: {
             enable: true,
             audioPlayback: true,
+            audioVolume: 100,
             groupResults: true,
             softKatakana: true,
             maxResults: 32,
@@ -375,7 +376,7 @@ function dictTermsGroup(definitions, dictionaries) {
             expression: firstDef.expression,
             reading: firstDef.reading,
             reasons: firstDef.reasons,
-            score: groupDefs.reduce((x, y) => x.score > y.score ? x.score : y.score, Number.MIN_SAFE_INTEGER),
+            score: groupDefs.reduce((p, v) => v.score > p ? v.score : p, Number.MIN_SAFE_INTEGER),
             source: firstDef.source
         });
     }
diff --git a/ext/bg/options.html b/ext/bg/options.html
index 3e457d2d..c483c656 100644
--- a/ext/bg/options.html
+++ b/ext/bg/options.html
@@ -25,10 +25,6 @@
             <div>
                 <h3>General Options</h3>
 
-                <div class="checkbox">
-                    <label><input type="checkbox" id="audio-playback-buttons"> Audio playback buttons</label>
-                </div>
-
                 <div class="checkbox">
                     <label><input type="checkbox" id="group-terms-results"> Group term results</label>
                 </div>
@@ -41,6 +37,15 @@
                     <label><input type="checkbox" id="soft-katakana-search"> Soft Katakana search</label>
                 </div>
 
+                <div class="checkbox">
+                    <label><input type="checkbox" id="audio-playback-buttons"> Audio playback buttons</label>
+                </div>
+
+                <div class="form-group options-advanced">
+                    <label for="audio-playback-volume">Audio playback volume (percent)</label>
+                    <input type="number" min="0" max="100" id="audio-playback-volume" class="form-control">
+                </div>
+
                 <div class="form-group options-advanced">
                     <label for="max-displayed-results">Maximum displayed results</label>
                     <input type="number" min="1" id="max-displayed-results" class="form-control">
diff --git a/ext/fg/js/display-frame.js b/ext/fg/js/display-frame.js
index 59032d0c..9fd09e74 100644
--- a/ext/fg/js/display-frame.js
+++ b/ext/fg/js/display-frame.js
@@ -51,6 +51,10 @@ window.displayFrame = new class extends Display {
         window.parent.postMessage('popupClose', '*');
     }
 
+    selectionCopy() {
+        window.parent.postMessage('selectionCopy', '*');
+    }
+
     showOrphaned() {
         $('#content').hide();
         $('#orphan').show();
@@ -77,4 +81,22 @@ window.displayFrame = new class extends Display {
             handler(params);
         }
     }
+
+    onKeyDown(e) {
+        const handlers = {
+            67: /* c */ () => {
+                if (e.ctrlKey && window.getSelection().toString() === '') {
+                    this.selectionCopy();
+                    return true;
+                }
+            }
+        };
+
+        const handler = handlers[e.keyCode];
+        if (handler && handler()) {
+            e.preventDefault();
+        } else {
+            super.onKeyDown(e);
+        }
+    }
 };
diff --git a/ext/fg/js/driver.js b/ext/fg/js/driver.js
index 5191f18d..d4cb1532 100644
--- a/ext/fg/js/driver.js
+++ b/ext/fg/js/driver.js
@@ -106,6 +106,10 @@ window.driver = new class {
         const handlers = {
             popupClose: () => {
                 this.searchClear();
+            },
+
+            selectionCopy: () => {
+                document.execCommand('copy');
             }
         };
 
diff --git a/ext/manifest.json b/ext/manifest.json
index c3f103ed..480dd176 100644
--- a/ext/manifest.json
+++ b/ext/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "Yomichan",
-    "version": "1.1.9",
+    "version": "1.1.10",
 
     "description": "Japanese dictionary with Anki integration",
     "icons": {"16": "mixed/img/icon16.png", "48": "mixed/img/icon48.png", "128": "mixed/img/icon128.png"},
@@ -29,7 +29,8 @@
     },
     "permissions": [
         "<all_urls>",
-        "storage"
+        "storage",
+        "clipboardWrite"
     ],
     "commands": {
         "toggle": {
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index 9738319a..36609525 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -343,6 +343,7 @@ class Display {
             let audio = this.audioCache[url];
             if (audio) {
                 audio.currentTime = 0;
+                audio.volume = this.options.general.audioVolume / 100.0;
                 audio.play();
             } else {
                 audio = new Audio(url);
@@ -352,6 +353,7 @@ class Display {
                     }
 
                     this.audioCache[url] = audio;
+                    audio.volume = this.options.general.audioVolume / 100.0;
                     audio.play();
                 };
             }