diff --git a/macos/swift-bar/switch-audio.30s.rb b/macos/swift-bar/switch-audio.30s.rb
new file mode 100755
index 0000000..1c83d6b
--- /dev/null
+++ b/macos/swift-bar/switch-audio.30s.rb
@@ -0,0 +1,51 @@
+#!/usr/bin/env ruby
+
+# true
+# true
+# true
+# true
+# true
+
+require "json"
+
+switch_audio_source = "/opt/homebrew/bin/SwitchAudioSource"
+
+unless ARGV.empty?
+ type, id = ARGV
+ `#{switch_audio_source} -t #{type} -i #{id}`
+end
+
+audio_sources = `#{switch_audio_source} -a -f json`
+ .lines(chomp: true)
+ .map {|x| JSON.parse(x) }
+ .group_by {|x| x.fetch("type") }
+
+input = JSON.parse(`#{switch_audio_source} -c -f json -t input`)
+output = JSON.parse(`#{switch_audio_source} -c -f json -t output`)
+
+puts ":waveform: | symbolize=true"
+puts "---"
+
+audio_sources.each do |type,sources|
+ sources.each do |source|
+ name = source.fetch("name")
+ id = source.fetch("id")
+
+ sf_type = case type
+ when "input" then ":mic.fill:"
+ when "output" then ":speaker.wave.2.fill:"
+ else fail "Unexpected type: #{type}"
+ end
+
+ params = {
+ symbolize: true,
+ checked: [input, output].include?(source),
+ bash: __FILE__,
+ terminal: false,
+ param0: type,
+ param1: id,
+ }
+
+ puts "#{sf_type} #{name} | #{params.map {|k,v| "#{k}=#{v}"}.join(" ")}"
+ end
+end