math.randomseed(os.time())
 
mp3 = System.listDirectory("ms0:/MUSIC")
 
num = {}
num[1] = math.random(3, table.maxn(mp3))
num[2] = math.random(3, table.maxn(mp3))
num[3] = math.random(3, table.maxn(mp3))
num[4] = math.random(3, table.maxn(mp3))
 
[...]
 
function check()
    if mp3[num[1]].directory then -- Linea n° 34
		local tempDir = System.listDirectory(mp3[num[1]].name)
		mp3[num[1]] = math.random(3, table.maxn(tempDir))
		check()
	end
	if mp3[num[2]].directory then -- Linea n° 39
		local tempDir2 = System.listDirectory(mp3[num[2]].name)
		mp3[num[2]] = math.random(3, table.maxn(tempDir2))
		check()
	end
	if mp3[num[3]].directory then -- Linea n° 44
		local tempDir3 = System.listDirectory(mp3[num[3]].name)
		mp3[num[3]] = math.random(3, table.maxn(tempDir3))
		check()
	end
	if mp3[num[4]].directory then -- Linea n° 49
		local tempDir4 = System.listDirectory(mp3[num[4]].name)
		mp3[num[4]] = math.random(3, table.maxn(tempDir4))
		check()
	end
end
 
[...]
 
-- No les pongo todo el código porque es enorme y no creo que quieran pasarse la tarde leyendolo XD