i use corripio. it is for mac and it works great. everything is automated. it detects your itunes library and you just hit go and it will work all automated. you can have it download artwork or you can have it download lyrics for your songs. it does a very good job. i reccomend that in the general preferences that you check the box that says "wait to show artwork conflicts" that way it will download everything that it knows is correct first, and then at the end it will show you the options for the ones that it has multiple results for. No need to copy and past or drag and drop. it inserts album art and lyrics right into itunes. this will work like a charm