Hi. Until recently all of my music was on a drive on my desktop computer known as m: and this is where ITunes got itsd music from. However I've now moved my ITunes and associated account to my laptop, and my music is on a nas storage device. Hence everything in my Itunes library is either showing as invalid location or refusing to play as the location is now incorrect. So my question is, how do I tel Itunes to forget about all the old stuff, and start to use the new location for its music source. Again sorry for the off topic nature of this and any help gratefully appreciated.