Questions about PowerAmp

I have a few questions about PowerAmp.

First of all, I use the app, Cover Art Downloader, to grab album artwork for all my songs, and it does a pretty good job. Problem is, when I play them in PowerAmp, some of the cover art comes up different. For instance, it'll show the back of the album case, and for one of my albums, it shows a promo shot from the band. Why isn't it using the regular cover downloaded in the other app? Can I change this?

Secondly, is there a way to "reshuffle" songs? It seems like once you turn shuffle on, it queues up your songs into a shuffled list, but I can't seem to find a way to "reshuffle" them from the beginning.

Lastly, and this kinda ties in with the previous question, but I noticed when I was first playing around with the app, I shuffled my songs, and listened to a few, then paused playback, unplugged my headphones, and later on, shut off my phone. The next day, I turned it on to use again (with the intent of "reshuffling" my songs), and when I plugged in my headphones, it instantly jumped to the same shuffle queue as I was listening to the day before. How do I stop that from happening?