Hi, welcome to the forum!
Based on the second point, about albums, it sounds like you activated the "remember playback position" flag, which you can find in the Tag Editor under Settings. To be sure, take a look at one of the files having this problem and see if that box is checked. The quickest fix would just be to select your whole library, open the tag editor, and check then uncheck it before saving.
Let us know if that doesn't solve it.