From b3cceb1b7dc62edde3def6571c2d3a8143852467 Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Sat, 8 Jul 2017 14:28:34 +0200
Subject: [PATCH] audio: add Mixer.Len

---
 audio/mixer.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/audio/mixer.go b/audio/mixer.go
index 1c0c3a3..6445654 100644
--- a/audio/mixer.go
+++ b/audio/mixer.go
@@ -4,6 +4,10 @@ type Mixer struct {
 	streamers []Streamer
 }
 
+func (m *Mixer) Len() int {
+	return len(m.streamers)
+}
+
 func (m *Mixer) Play(s ...Streamer) {
 	m.streamers = append(m.streamers, s...)
 }