Originally Posted by Adar
I had the same problem with PowerAmp. It has its own lock screen that will show up when you are playing music. sometimes the timing is off, and I end up with the regular lock screen. I can't turn off the stock lock screen, because I WANT that lock screen when I'm NOT playing music. I've pretty much just gotten used to dealing with it and haven't really tried to find a solution to it. At least you have a solution that works. One of these days I'll get around to sending a note to the PowerAmp people and see if they can fix it.
You could set poweramp to disable poweamps lockscreen. Or uncheck the enable option. Leave android lockscreen controls checked. This would leave you with no album art but you would still get music controls on the lock bar above the dock.
Setting should look like this.
Unless album art on lockscreen is really important to you...