set active state timeout to 10 seconds. Enough for a YouTube movie switch -- 3 or 5 seconds doesn't seem to be enough.

scripts/shairport-sync.conf

@@ -59,7 +59,7 @@ sessioncontrol =
 //	"active" state starts when play begins and ends when the active_state_timeout has elapsed after play ends, unless another play session starts before the timeout has fully elapsed.
 //	run_this_before_entering_active_state = "/full/path/to/application and args"; // make sure the application has executable permission. If it's a script, include the shebang (#!/bin/...) on the first line
 //	run_this_after_exiting_active_state = "/full/path/to/application and args"; // make sure the application has executable permission. If it's a script, include the shebang (#!/bin/...) on the first line
-//	active_state_timeout = 3; // wait for this number of seconds after play ends before leaving the active state, unless another play session begins.
+//	active_state_timeout = 10.0; // wait for this number of seconds after play ends before leaving the active state, unless another play session begins.
 
 //	run_this_if_an_unfixable_error_is_detected = "/full/path/to/application and args"; // if a problem occurs that can't be cleared by Shairport Sync itself, hook a program on here to deal with it. An error code-string is passed as the last argument.
 //	  Many of these "unfixable" problems are caused by malfunctioning output devices, and sometimes it is necessary to restart the whole device to clear the problem.

shairport.c

@@ -342,7 +342,7 @@ int parse_options(int argc, char **argv) {
                                  // nothing else comes in first.
   config.fixedLatencyOffset = 11025; // this sounds like it works properly.
   config.diagnostic_drop_packet_fraction = 0.0;
-  config.active_state_timeout = 3.0;
+  config.active_state_timeout = 10.0;
   config.volume_range_hw_priority =
       0; // if combining software and hardware volume control, give the software priority
 // i.e. when reducing volume, reduce the sw first before reducing the software.