Philips DVP 642 DivX Aspect Ratio

I have some DivX files which are 16:9. But this player always scales them the same. They are stretched to mostly fill the screen.

For a 4:3 setting (4:3 LB), shouldn’t they be shown fully letterboxed?

And, for 16:9, given that 640x352 isn’t exactly 16:9 (640x360 would be, but 360 isn’t a multiple of 16), I understand a small amount of letterboxing. But for a 480-line display, this should be about 10 lines, which would not show up on my overscanned TV.

Any advise?