diff --git a/images/Effect.h b/images/Effect.h
index 1713f8f22..790cc33f1 100644
--- a/images/Effect.h
+++ b/images/Effect.h
@@ -1,98 +1,7 @@
-/* XPM */
-static const char * effect_enable_xpm[] = {
-"16 16 71 1",
-" 	c #FFFFFF",
-".	c #C8E5C9",
-"+	c #8FCA92",
-"@	c #61B565",
-"#	c #41A646",
-"$	c #E6F3E6",
-"%	c #90CB93",
-"&	c #3FA443",
-"*	c #35A03A",
-"=	c #7EC281",
-"-	c #36A03B",
-";	c #39A23E",
-">	c #37A13C",
-",	c #61B564",
-"'	c #96CD99",
-")	c #6BBA6F",
-"!	c #3CA341",
-"~	c #3AA23F",
-"{	c #6EBB72",
-"]	c #D3EAD5",
-"^	c #FAFCFA",
-"/	c #C4E3C5",
-"(	c #4EAC52",
-"_	c #38A13D",
-":	c #3DA442",
-"<	c #67B76A",
-"[	c #D5EBD5",
-"}	c #FDFEFD",
-"|	c #FAFDFB",
-"1	c #ADD8AE",
-"2	c #42A647",
-"3	c #3EA442",
-"4	c #70BC74",
-"5	c #A3D4A6",
-"6	c #84C486",
-"7	c #49A94D",
-"8	c #53AE56",
-"9	c #C1E2C2",
-"0	c #FAFDFA",
-"a	c #FBFDFB",
-"b	c #CAE6CC",
-"c	c #5BB260",
-"d	c #4DAB51",
-"e	c #BCE0BE",
-"f	c #F9FCFA",
-"g	c #EFF7EF",
-"h	c #B1DAB2",
-"i	c #A9D7AB",
-"j	c #F5FAF6",
-"k	c #FCFEFC",
-"l	c #D5EBD6",
-"m	c #63B566",
-"n	c #85C688",
-"o	c #E9F5EA",
-"p	c #FEFEFE",
-"q	c #F8FCF8",
-"r	c #F4FAF4",
-"s	c #FEFFFE",
-"t	c #E9F4E9",
-"u	c #7DC280",
-"v	c #8CC98F",
-"w	c #E8F4E9",
-"x	c #F6FBF6",
-"y	c #A1D3A3",
-"z	c #81C384",
-"A	c #D6ECD7",
-"B	c #E2F2E3",
-"C	c #A4D4A6",
-"D	c #4AAA4F",
-"E	c #54AE58",
-"F	c #5EB463",
-"    .+@##@+.    ",
-"  $%&******&%$  ",
-" $=**********=$ ",
-" %********-;-*% ",
-".&*******>,')!&.",
-"+*******~{]^/(*+",
-"@**_:_*><[}|12*@",
-"#*34567890abc-*#",
-"#*defghijklm-**#",
-"@*&nopqrstu_***@",
-"+**2vwssxy:****+",
-".&**3zABCD****&.",
-" %***!EF2*****% ",
-" $=****-*****=$ ",
-"  $%&******&%$  ",
-"    .+@##@+.    "};
-
 /* XPM */
 static const char * effect_disable_xpm[] = {
 "16 16 51 1",
-" 	c #FFFFFF",
+" 	c None",
 ".	c #F3D3D3",
 "+	c #E19393",
 "@	c #D25C5C",
@@ -160,6 +69,97 @@ static const char * effect_disable_xpm[] = {
 "  $%&&&&&&&&%$  ",
 "   .+@####@+.   "};
 
+/* XPM */
+static const char * effect_enable_xpm[] = {
+"16 16 71 1",
+" 	c None",
+".	c #C8E5C9",
+"+	c #8FCA92",
+"@	c #61B565",
+"#	c #41A646",
+"$	c #E6F3E6",
+"%	c #90CB93",
+"&	c #3FA443",
+"*	c #35A03A",
+"=	c #7EC281",
+"-	c #36A03B",
+";	c #39A23E",
+">	c #37A13C",
+",	c #61B564",
+"'	c #96CD99",
+")	c #6BBA6F",
+"!	c #3CA341",
+"~	c #3AA23F",
+"{	c #6EBB72",
+"]	c #D3EAD5",
+"^	c #FAFCFA",
+"/	c #C4E3C5",
+"(	c #4EAC52",
+"_	c #38A13D",
+":	c #3DA442",
+"<	c #67B76A",
+"[	c #D5EBD5",
+"}	c #FDFEFD",
+"|	c #FAFDFB",
+"1	c #ADD8AE",
+"2	c #42A647",
+"3	c #3EA442",
+"4	c #70BC74",
+"5	c #A3D4A6",
+"6	c #84C486",
+"7	c #49A94D",
+"8	c #53AE56",
+"9	c #C1E2C2",
+"0	c #FAFDFA",
+"a	c #FBFDFB",
+"b	c #CAE6CC",
+"c	c #5BB260",
+"d	c #4DAB51",
+"e	c #BCE0BE",
+"f	c #F9FCFA",
+"g	c #EFF7EF",
+"h	c #B1DAB2",
+"i	c #A9D7AB",
+"j	c #F5FAF6",
+"k	c #FCFEFC",
+"l	c #D5EBD6",
+"m	c #63B566",
+"n	c #85C688",
+"o	c #E9F5EA",
+"p	c #FFFFFF",
+"q	c #F8FCF8",
+"r	c #F4FAF4",
+"s	c #FEFFFE",
+"t	c #E9F4E9",
+"u	c #7DC280",
+"v	c #8CC98F",
+"w	c #E8F4E9",
+"x	c #F6FBF6",
+"y	c #A1D3A3",
+"z	c #81C384",
+"A	c #D6ECD7",
+"B	c #E2F2E3",
+"C	c #A4D4A6",
+"D	c #4AAA4F",
+"E	c #54AE58",
+"F	c #5EB463",
+"    .+@##@+.    ",
+"  $%&******&%$  ",
+" $=**********=$ ",
+" %********-;-*% ",
+".&*******>,')!&.",
+"+*******~{]^/(*+",
+"@**_:_*><[}|12*@",
+"#*34567890abc-*#",
+"#*defghijklm-**#",
+"@*&nopqrstu_***@",
+"+**2vwssxy:****+",
+".&**3zABCD****&.",
+" %***!EF2*****% ",
+" $=****-*****=$ ",
+"  $%&******&%$  ",
+"    .+@##@+.    "};
+
 /* XPM */
 static const char * effect_menu_xpm[] = {
 "16 16 2 1",
@@ -523,90 +523,10 @@ static const char * effect_ffwd_xpm[] = {
 "  MN   MN       ",
 "                "};
 
-/* XPM */
-static const char * effect_enable_disabled_xpm[] = {
-"16 16 60 1",
-" 	c #FFFFFF",
-".	c #D6D6D6",
-"+	c #ACACAC",
-"@	c #8B8B8B",
-"#	c #737373",
-"$	c #ECECEC",
-"%	c #ADADAD",
-"&	c #717171",
-"*	c #6A6A6A",
-"=	c #A0A0A0",
-"-	c #6B6B6B",
-";	c #6D6D6D",
-">	c #6C6C6C",
-",	c #B1B1B1",
-"'	c #929292",
-")	c #6F6F6F",
-"!	c #6E6E6E",
-"~	c #949494",
-"{	c #DEDEDE",
-"]	c #FBFBFB",
-"^	c #D3D3D3",
-"/	c #7D7D7D",
-"(	c #707070",
-"_	c #8F8F8F",
-":	c #E0E0E0",
-"<	c #FDFDFD",
-"[	c #C2C2C2",
-"}	c #747474",
-"|	c #969696",
-"1	c #BBBBBB",
-"2	c #A4A4A4",
-"3	c #797979",
-"4	c #808080",
-"5	c #D1D1D1",
-"6	c #FCFCFC",
-"7	c #D8D8D8",
-"8	c #868686",
-"9	c #7C7C7C",
-"0	c #CECECE",
-"a	c #FAFAFA",
-"b	c #F3F3F3",
-"c	c #C5C5C5",
-"d	c #C0C0C0",
-"e	c #F7F7F7",
-"f	c #8C8C8C",
-"g	c #A5A5A5",
-"h	c #EFEFEF",
-"i	c #FEFEFE",
-"j	c #EEEEEE",
-"k	c #9F9F9F",
-"l	c #AAAAAA",
-"m	c #F8F8F8",
-"n	c #BABABA",
-"o	c #A2A2A2",
-"p	c #E1E1E1",
-"q	c #EAEAEA",
-"r	c #BCBCBC",
-"s	c #7A7A7A",
-"t	c #818181",
-"u	c #898989",
-"    .+@##@+.    ",
-"  $%&******&%$  ",
-" $=**********=$ ",
-" %********-;-*% ",
-".&*******>@,')&.",
-"+*******!~{]^/*+",
-"@**>(>*>_:<][}*@",
-"#*&|12345]678-*#",
-"#*90abcde<:f-**#",
-"@*&ghiaeijk>***@",
-"+**}ljiimn(****+",
-".&**&opqrs****&.",
-" %***)tu}*****% ",
-" $=****-*****=$ ",
-"  $%&******&%$  ",
-"    .+@##@+.    "};
-
 /* XPM */
 static const char * effect_disable_disabled_xpm[] = {
 "16 16 46 1",
-" 	c #FFFFFF",
+" 	c None",
 ".	c #E3E3E3",
 "+	c #BABABA",
 "@	c #979797",
@@ -669,6 +589,87 @@ static const char * effect_disable_disabled_xpm[] = {
 "  $%&&&&&&&&%$  ",
 "   .+@####@+.   "};
 
+/* XPM */
+static const char * effect_enable_disabled_xpm[] = {
+"16 16 61 1",
+" 	c None",
+".	c #D6D6D6",
+"+	c #ACACAC",
+"@	c #8B8B8B",
+"#	c #737373",
+"$	c #ECECEC",
+"%	c #ADADAD",
+"&	c #717171",
+"*	c #6A6A6A",
+"=	c #A0A0A0",
+"-	c #6B6B6B",
+";	c #6D6D6D",
+">	c #6C6C6C",
+",	c #B1B1B1",
+"'	c #929292",
+")	c #6F6F6F",
+"!	c #6E6E6E",
+"~	c #949494",
+"{	c #DEDEDE",
+"]	c #FBFBFB",
+"^	c #D3D3D3",
+"/	c #7D7D7D",
+"(	c #707070",
+"_	c #8F8F8F",
+":	c #E0E0E0",
+"<	c #FDFDFD",
+"[	c #C2C2C2",
+"}	c #747474",
+"|	c #969696",
+"1	c #BBBBBB",
+"2	c #A4A4A4",
+"3	c #797979",
+"4	c #808080",
+"5	c #D1D1D1",
+"6	c #FCFCFC",
+"7	c #D8D8D8",
+"8	c #868686",
+"9	c #7C7C7C",
+"0	c #CECECE",
+"a	c #FAFAFA",
+"b	c #F3F3F3",
+"c	c #C5C5C5",
+"d	c #C0C0C0",
+"e	c #F7F7F7",
+"f	c #8C8C8C",
+"g	c #A5A5A5",
+"h	c #EFEFEF",
+"i	c #FFFFFF",
+"j	c #FEFEFE",
+"k	c #EEEEEE",
+"l	c #9F9F9F",
+"m	c #AAAAAA",
+"n	c #F8F8F8",
+"o	c #BABABA",
+"p	c #A2A2A2",
+"q	c #E1E1E1",
+"r	c #EAEAEA",
+"s	c #BCBCBC",
+"t	c #7A7A7A",
+"u	c #818181",
+"v	c #898989",
+"    .+@##@+.    ",
+"  $%&******&%$  ",
+" $=**********=$ ",
+" %********-;-*% ",
+".&*******>@,')&.",
+"+*******!~{]^/*+",
+"@**>(>*>_:<][}*@",
+"#*&|12345]678-*#",
+"#*90abcde<:f-**#",
+"@*&ghiaejkl>***@",
+"+**}mkjjno(****+",
+".&**&pqrst****&.",
+" %***)uv}*****% ",
+" $=****-*****=$ ",
+"  $%&******&%$  ",
+"    .+@##@+.    "};
+
 /* XPM */
 static const char * effect_play_disabled_xpm[] = {
 "16 16 48 1",
diff --git a/src/AudioIO.cpp b/src/AudioIO.cpp
index 58bd9564c..a7094c2d9 100644
--- a/src/AudioIO.cpp
+++ b/src/AudioIO.cpp
@@ -558,6 +558,10 @@ AudioIO::AudioIO()
    mUpdateMeters = false;
    mUpdatingMeters = false;
 
+   mOwningProject = NULL;
+   mInputMeter = NULL;
+   mOutputMeter = NULL;
+
    PaError err = Pa_Initialize();
 
    if (err != paNoError) {
@@ -1621,6 +1625,11 @@ bool AudioIO::StartPortMidiStream()
 }
 #endif
 
+bool AudioIO::IsAvailable(AudacityProject *project)
+{
+   return mOwningProject == NULL || mOwningProject == project;
+}
+
 void AudioIO::SetCaptureMeter(AudacityProject *project, Meter *meter)
 {
    if (!mOwningProject || mOwningProject == project)
diff --git a/src/AudioIO.h b/src/AudioIO.h
index b8d825ee9..6d5bd8db8 100644
--- a/src/AudioIO.h
+++ b/src/AudioIO.h
@@ -323,6 +323,7 @@ class AUDACITY_DLL_API AudioIO {
       double AILAGetLastDecisionTime();
    #endif
 
+   bool IsAvailable(AudacityProject *projecT);
    void SetCaptureMeter(AudacityProject *project, Meter *meter);
    void SetPlaybackMeter(AudacityProject *project, Meter *meter);
 
diff --git a/src/effects/Effect.cpp b/src/effects/Effect.cpp
index 10da5ea5e..6647b92df 100644
--- a/src/effects/Effect.cpp
+++ b/src/effects/Effect.cpp
@@ -2149,6 +2149,7 @@ bool EffectUIHost::Initialize()
 
    w->SetScrollRate(0, 20);
 
+   mDisableTransport = !gAudioIO->IsAvailable(mProject);
    mPlaying = gAudioIO->IsStreamActive(); // not exactly right, but will suffice
    mCapturing = gAudioIO->IsStreamActive() && gAudioIO->GetNumCaptureChannels() > 0;
 
@@ -2234,7 +2235,6 @@ bool EffectUIHost::Initialize()
       bb = new wxBitmapButton(bar, kPlayID, mPlayBM);
       bb->SetBitmapDisabled(mPlayDisabledBM);
       mPlayBtn = bb;
-      mPlayBtn->SetToolTip(_("Start and stop playback"));
       bs->Add(mPlayBtn);
    }
 
@@ -2299,6 +2299,11 @@ bool EffectUIHost::Initialize()
       return false;
    }
 
+   if (mDisableTransport)
+   {
+      mEffect->RealtimeSuspend();
+   }
+
    EffectManager::Get().RealtimeAddEffect(mEffect);
 
    wxTheApp->Connect(EVT_AUDIOIO_PLAYBACK,
@@ -2844,10 +2849,11 @@ void EffectUIHost::UpdateControls()
          bb = (wxBitmapButton *) mPlayBtn;
          bb->SetBitmapLabel(mStopBM);
          bb->SetBitmapDisabled(mStopDisabledBM);
+         bb->SetToolTip(_("Stop"));
 #if defined(__WXMAC__)
-         mPlayBtn->SetName(_("Stop &Playback"));
+         bb->SetName(_("Stop &Playback"));
 #else
-         mPlayBtn->SetLabel(_("Stop &Playback"));
+         bb->SetLabel(_("Stop &Playback"));
 #endif
       }
    }
@@ -2865,10 +2871,11 @@ void EffectUIHost::UpdateControls()
          bb = (wxBitmapButton *) mPlayBtn;
          bb->SetBitmapLabel(mPlayBM);
          bb->SetBitmapDisabled(mPlayDisabledBM);
+         bb->SetToolTip(_("Play"));
 #if defined(__WXMAC__)
-         mPlayBtn->SetName(_("Start &Playback"));
+         bb->SetName(_("Start &Playback"));
 #else
-         mPlayBtn->SetLabel(_("Start &Playback"));
+         bb->SetLabel(_("Start &Playback"));
 #endif
       }
    }
@@ -2887,10 +2894,11 @@ void EffectUIHost::UpdateControls()
          bb = (wxBitmapButton *) mEnableBtn;
          bb->SetBitmapLabel(mEnableBM);
          bb->SetBitmapDisabled(mEnableDisabledBM);
+         bb->SetToolTip(_("Enable"));
 #if defined(__WXMAC__)
-         mEnableBtn->SetName(_("Enable &Effect"));
+         bb->SetName(_("Enable &Effect"));
 #else
-         mEnableBtn->SetLabel(_("Enable &Effect"));
+         bb->SetLabel(_("Enable &Effect"));
 #endif
       }
    }
@@ -2908,10 +2916,11 @@ void EffectUIHost::UpdateControls()
          bb = (wxBitmapButton *) mEnableBtn;
          bb->SetBitmapLabel(mDisableBM);
          bb->SetBitmapDisabled(mDisableDisabledBM);
+         bb->SetToolTip(_("Disable"));
 #if defined(__WXMAC__)
-         mEnableBtn->SetName(_("Disable &Effect"));
+         bb->SetName(_("Disable &Effect"));
 #else
-         mEnableBtn->SetLabel(_("Disable &Effect"));
+         bb->SetLabel(_("Disable &Effect"));
 #endif
       }
    }