--- a/browser/base/content/nsContextMenu.js
+++ b/browser/base/content/nsContextMenu.js
@@ -467,17 +467,17 @@ nsContextMenu.prototype = {
     var onMedia = (this.onVideo || this.onAudio);
     // Several mutually exclusive items... play/pause, mute/unmute, show/hide
     this.showItem("context-media-play",  onMedia && (this.target.paused || this.target.ended));
     this.showItem("context-media-pause", onMedia && !this.target.paused && !this.target.ended);
     this.showItem("context-media-mute",   onMedia && !this.target.muted);
     this.showItem("context-media-unmute", onMedia && this.target.muted);
     this.showItem("context-media-playbackrate", onMedia);
     this.showItem("context-media-showcontrols", onMedia && !this.target.controls);
-    this.showItem("context-media-hidecontrols", onMedia && this.target.controls);
+    this.showItem("context-media-hidecontrols", this.target.controls && (this.onVideo || (this.onAudio && !this.inSyntheticDoc)));
     this.showItem("context-video-fullscreen", this.onVideo && this.target.ownerDocument.fullscreenElement == null);
     var statsShowing = this.onVideo && this.target.mozMediaStatisticsShowing;
     this.showItem("context-video-showstats", this.onVideo && this.target.controls && !statsShowing);
     this.showItem("context-video-hidestats", this.onVideo && this.target.controls && statsShowing);
     this.showItem("context-media-eme-learnmore", this.onDRMMedia);
     this.showItem("context-media-eme-separator", this.onDRMMedia);
 
     // Disable them when there isn't a valid media source loaded.

--- a/browser/base/content/test/general/browser_contextmenu.js
+++ b/browser/base/content/test/general/browser_contextmenu.js
@@ -23,16 +23,22 @@ add_task(function* test_setup() {
   Services.scriptloader.loadSubScript(contextmenu_common, this);
 
   yield ContentTask.spawn(gBrowser.selectedBrowser, null, function*() {
     let doc = content.document;
     let videoIframe = doc.querySelector("#test-video-in-iframe");
     let video = videoIframe.contentDocument.querySelector("video");
     video.pause();
     yield ContentTaskUtils.waitForCondition(() => video.paused, "iframe video should be paused");
+
+    let audioIframe = doc.querySelector("#test-audio-in-iframe");
+    // media documents always use a <video> tag.
+    let audio = audioIframe.contentDocument.querySelector("video");
+    audio.pause();
+    yield ContentTaskUtils.waitForCondition(() => audio.paused, "iframe audio should be paused");
   });
 });
 
 let plainTextItems;
 add_task(function* test_plaintext() {
   plainTextItems = ["context-navigation",   null,
                         ["context-back",         false,
                          "context-forward",      false,
@@ -257,16 +263,46 @@ add_task(function* test_video_in_iframe(
           "context-saveframe",         true,
           "---",                       null,
           "context-printframe",        true,
           "---",                       null,
           "context-viewframeinfo",     true], null]
   );
 });
 
+add_task(function* test_audio_in_iframe() {
+  yield test_contextmenu("#test-audio-in-iframe",
+    ["context-media-play",         true,
+     "context-media-mute",         true,
+     "context-media-playbackrate", null,
+         ["context-media-playbackrate-050x", true,
+          "context-media-playbackrate-100x", true,
+          "context-media-playbackrate-150x", true,
+          "context-media-playbackrate-200x", true], null,
+     "---",                        null,
+     "context-copyaudiourl",       true,
+     "---",                        null,
+     "context-saveaudio",          true,
+     "context-sendaudio",          true,
+     "frame",                null,
+         ["context-showonlythisframe", true,
+          "context-openframeintab",    true,
+          "context-openframe",         true,
+          "---",                       null,
+          "context-reloadframe",       true,
+          "---",                       null,
+          "context-bookmarkframe",     true,
+          "context-saveframe",         true,
+          "---",                       null,
+          "context-printframe",        true,
+          "---",                       null,
+          "context-viewframeinfo",     true], null]
+  );
+});
+
 add_task(function* test_image_in_iframe() {
   yield test_contextmenu("#test-image-in-iframe",
     ["context-viewimage",            true,
      "context-copyimage-contents",   true,
      "context-copyimage",            true,
      "---",                          null,
      "context-saveimage",            true,
      "context-sendimage",            true,

--- a/browser/base/content/test/general/subtst_contextmenu.html
+++ b/browser/base/content/test/general/subtst_contextmenu.html
@@ -15,16 +15,17 @@ Browser context menu subtest.
 <video controls id="test-video-ok"  src="video.ogg" width="100" height="100" style="background-color: green"></video>
 <video id="test-audio-in-video" src="audio.ogg" width="100" height="100" style="background-color: red"></video>
 <video controls id="test-video-bad" src="bogus.duh" width="100" height="100" style="background-color: orange"></video>
 <video controls id="test-video-bad2" width="100" height="100" style="background-color: yellow">
   <source src="bogus.duh" type="video/durrrr;">
 </video>
 <iframe id="test-iframe" width="98"  height="98" style="border: 1px solid black"></iframe>
 <iframe id="test-video-in-iframe" src="video.ogg" width="98" height="98" style="border: 1px solid black"></iframe>
+<iframe id="test-audio-in-iframe" src="audio.ogg" width="98" height="98" style="border: 1px solid black"></iframe>
 <iframe id="test-image-in-iframe" src="ctxmenu-image.png" width="98" height="98" style="border: 1px solid black"></iframe>
 <textarea id="test-textarea">chssseesbbbie</textarea> <!-- a weird word which generates only one suggestion -->
 <div id="test-contenteditable" contenteditable="true">chssseefsbbbie</div> <!-- a more weird word which generates no suggestions -->
 <div id="test-contenteditable-spellcheck-false" contenteditable="true" spellcheck="false">test</div> <!-- No Check Spelling menu item -->
 <div id="test-dom-full-screen">DOM full screen FTW</div>
 <div contextmenu="myMenu">
   <p id="test-pagemenu" hopeless="true">I've got a context menu!</p>
   <menu id="myMenu" type="context">