diff --git a/Audio/Chain/BufferChain.m b/Audio/Chain/BufferChain.m
index b0dba6de0..478d14adb 100644
--- a/Audio/Chain/BufferChain.m
+++ b/Audio/Chain/BufferChain.m
@@ -51,10 +51,10 @@
 	
 	id<CogSource> source = [AudioSource audioSourceForURL:url];
 	DLog(@"Opening: %@", url);
-	if (![source open:url])
+	if (!source || ![source open:url])
 	{
 		DLog(@"Couldn't open source...");
-        url = [NSURL URLWithString:@"silence://1"];
+        url = [NSURL URLWithString:@"silence://10"];
         source = [AudioSource audioSourceForURL:url];
         if (![source open:url])
             return NO;
diff --git a/Plugins/SilenceDecoder/SilenceDecoder/SilenceDecoder.m b/Plugins/SilenceDecoder/SilenceDecoder/SilenceDecoder.m
index 91fdde348..991f8bcda 100755
--- a/Plugins/SilenceDecoder/SilenceDecoder/SilenceDecoder.m
+++ b/Plugins/SilenceDecoder/SilenceDecoder/SilenceDecoder.m
@@ -23,7 +23,10 @@ enum { channels = 2 };
     
     NSString * path = [[[s url] relativeString] substringFromIndex:10];
     
-    length = [path intValue] * sample_rate;
+    int seconds = [path intValue];
+    if (!seconds) seconds = 10;
+    
+    length = seconds * sample_rate;
     remain = length;
     
     [self willChangeValueForKey:@"properties"];