Wait, is album art only getting cut off if it's not an exact square? Or are they all getting cut off?
My one complaint regarding album art (barely) is that a lot of text won't show up on top of it depending on the artwork... any chance we could do white text with a black border for song titles and artist names that show up on top of album art? Or even a transparent black box behind the text?
In my experience, this seems to affect all album art :X
Given the X5's slightly rectangular screen, I recommend having a slightly smaller album art to the left, with the song info and lyrics to the right like how many other DAPs (e.g. iBasso DX50) have done.
...or just give us an option to change the "Now Playing" screen like how we can change the "Lockscreen" modes (e.g. RockBoxed Clip Zip; you will need to know how to modify the WPS file though) :D