Hi there, i've recently changed all my individual file icons like .avi, .mpeg files etc. and it all worked fine.

Now though the problem is some of my icons reverted bacl to there defaults so i had to change them back but now whenever i try to change my mp3 or mp4 icons it seems as though they think they are one icon. Like for example if i change my mp3 icon and click on apply it changes the mp4 icons aswell, can somebody tell me why this is happening please? thanks.