Usingbackground Music

---------------------------------------------------
-- MusicLib.lua
---------------------------------------------------
local _M = {}

local audioChannel
local otherAudioChannel
local currentSong
local curAudio
local prevAudio = 1


audio.crossFadeBackground = function (path, force)
        local musicPath = path
        if currentSong == musicPath and audio.getVolume{channel = audioChannel} > 0.1 and not force then return false end
        audio.fadeOut({channel=audioChannel, time=1000})
        if audioChannel==1 then audioChannel,otherAudioChannel=2,1 else audioChannel,otherAudioChannel=1,2 end
        audio.setVolume( 1, {channel = audioChannel})
        curAudio = audio.loadStream( musicPath )
        audio.play(curAudio, {channel=audioChannel, loops=-1, fadein=1000})
        prevAudio = curAudio
        currentSong = musicPath
        audio.currentBackgroundChannel = audioChannel
end
audio.reserveChannels(2)
audio.currentBackgroundChannel = 1

return _M



-------------------------------------------------------
-- ANY FILE YOU LIKE THIS FUNCTION IN:
-------------------------------------------------------
require ( "MusicLib" )

audio.crossFadeBackground("yourMusicFile.mp3", 1)

-- IF YOU WANT THIS TO WORK IN I.E. COMPOSER OR STORYBOARD, JUST PUT THE LINE IN ENTERSCENE LIKE:
--STORYBOARD:
function scene:enterScene( event )
    local screenGroup = self.view
    audio.crossFadeBackground("yourMusicFile.mp3", 1)
end

-- COMPOSER:
function scene:show( event )
   local sceneGroup = self.view
   local phase = event.phase
   if ( phase == "will" ) then
        audio.crossFadeBackground("yourMusicFile.mp3", 1)
   elseif ( phase == "did" ) then
   end
end