Update controlpanel.ui

[imGiantChan]

I shrink down the left mouse-hover area to make sure that users not be mad about the slide of the picture when they want to close or minimize the playing window, also I do the same thing to the channel mouse hover area, I cut the left of the area to the right of the song's picture. I hope this is an improvement.

[zonyitoo]

I don't think that's a good idea.