Retrieve ID3 tags from MP3

GetID3Tag.lua

--Custom function that collects ID3 tag from mp3 File

function getID3(filename)
	local ID3 = {}
	local file = assert(io.open(filename,"rb"))
	file:seek("end")
	file:seek("cur",-128)
	ID3.TAG = file:read(3)
	ID3.TITLE = file:read(30)
	ID3.INTERPRET = file:read(30)
	ID3.ALBUM = file:read(30)
	ID3.YEAR = tonumber(file:read(4))
	ID3.COMMENT = file:read(30)
	file:close()
		for k in pairs(ID3) do
			if not ID3[k] then table.remove(ID3,k) end
		end
	return ID3
end

--Example 
local tag = getID3("mp3.mp3")
for k,v in pairs(tag) do print(k,v) end