diff --git a/application/libraries/Librivox_id3tag.php b/application/libraries/Librivox_id3tag.php
index 82b0aef3..46cde18b 100644
--- a/application/libraries/Librivox_id3tag.php
+++ b/application/libraries/Librivox_id3tag.php
@@ -161,6 +161,7 @@ function _create_files_table($dir, $map = array(), $freeze = false)
 
                 //analyze volume
                 $mp3gain_result = $this->librivox_mp3gain->analyze_file($dir, $file);
+                if (! $mp3gain_result) continue;
 
 				$file_array = $this-> _create_file_array($freeze); //prototype
 
diff --git a/application/libraries/Librivox_mp3gain.php b/application/libraries/Librivox_mp3gain.php
index 7e89db33..51f6ea2f 100644
--- a/application/libraries/Librivox_mp3gain.php
+++ b/application/libraries/Librivox_mp3gain.php
@@ -68,9 +68,13 @@ public function analyze_file($dir, $file_name)
 		$command = $this->mp3gain .  ' ' . $this->flag . $dir. $file_name;
 		exec($command, $output);
 
-		$parts = explode("\t", $output[1]);
+        if (count($output) > 1) {
+            $parts = explode("\t", $output[1]);
+            return $parts;
+        } else {
+            return false;
+        }
 
-		return $parts;
 
 	}
 
@@ -89,4 +93,4 @@ public function adjust($dir, $map)
 			unset($output);
 		}
 	}
-}
\ No newline at end of file
+}