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diff -Naur mplayer-1.2_pre20150214/libao2/ao_pulse.c mplayer-1.2_pre20150214_2/libao2/ao_pulse.c
--- mplayer-1.2_pre20150214/libao2/ao_pulse.c	2015-02-15 06:30:21.000000000 +1000
+++ mplayer-1.2_pre20150214_2/libao2/ao_pulse.c	2015-05-17 14:07:07.615640169 +1000
@@ -53,6 +53,8 @@
 
 static int broken_pause;
 
+static size_t bytes_per_sample;
+
 LIBAO_EXTERN(pulse)
 
 #define GENERIC_ERR_MSG(ctx, str) \
@@ -201,6 +203,8 @@
     }
 
     pa_channel_map_init_auto(&map, ss.channels, PA_CHANNEL_MAP_ALSA);
+    bytes_per_sample = af_fmt2bits(ao_data.format) / 8;
+    bytes_per_sample *= ao_data.channels;
     ao_data.bps = pa_bytes_per_second(&ss);
 
     if (!(mainloop = pa_threaded_mainloop_new())) {
@@ -297,6 +301,11 @@
 
 /** Play the specified data to the pulseaudio server */
 static int play(void* data, int len, int flags) {
+    //Align length to frame size
+    len=len - (len % bytes_per_sample);
+    if (len==0) {
+      return 0;
+    }
     pa_threaded_mainloop_lock(mainloop);
     if (pa_stream_write(stream, data, len, NULL, 0, PA_SEEK_RELATIVE) < 0) {
         GENERIC_ERR_MSG(context, "pa_stream_write() failed");