From a3ad670108088fa7e4a36a1f596eb16b69a2d870 Mon Sep 17 00:00:00 2001
From: Paul Kaplan <pkaplan@media.mit.edu>
Date: Mon, 24 Jul 2017 08:51:26 -0400
Subject: [PATCH] Prevent rendering sound editor for non-existant sounds

---
 src/containers/sound-tab.jsx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/containers/sound-tab.jsx b/src/containers/sound-tab.jsx
index 519de7688..f95f6f709 100644
--- a/src/containers/sound-tab.jsx
+++ b/src/containers/sound-tab.jsx
@@ -38,7 +38,7 @@ class SoundTab extends React.Component {
         const target = editingTarget && sprites[editingTarget] ? sprites[editingTarget] : stage;
 
         if (target && target.sounds && this.state.selectedSoundIndex > target.sounds.length - 1) {
-            this.setState({selectedSoundIndex: target.sounds.length - 1});
+            this.setState({selectedSoundIndex: Math.max(target.sounds.length - 1, 0)});
         }
     }
 
@@ -106,7 +106,7 @@ class SoundTab extends React.Component {
                 onDeleteClick={this.handleDeleteSound}
                 onItemClick={this.handleSelectSound}
             >
-                {target.sounds ? (
+                {target.sounds && target.sounds.length > 0 ? (
                     <SoundEditor soundIndex={this.state.selectedSoundIndex} />
                 ) : null}
                 {this.props.soundRecorderVisible ? (