1. The ability to add multiple jpeg files in one go would save a LOT of hassle. That is, to be able to multi-select files when adding to artwork instead of one-at-a-time.
2. Further to above, the last selected options (embed in file, link to file, etc) to be remembered - at the moment the "embed option" is always selected by default regardless of last action.
3. The artwork pop-up window that opens when you double-click the artwork during playback to be resizable AND zoomable - preferably both simultaneously, i.e. the ratio of the window is constrained and the contents auto-resizes to fill frame.
4. Further to above, a back/forward clickable in the pop-up window that allows you to navigate to the next/previous artwork file.