Missing Album Art

I have a 4GB Clip Zip which in which I have installed an 8GB micro SD card I used Windows Media Player to drag and drop many albums to the card and all of them included the art worl with no problem. All of a sudden, any new files I drag and drop the same way fail to include the album art. I was wondering if anyone had any ideas what might cause this. Thanks.

I usually have the best luck if I follow 3 rules for images:

1: Make sure the dimensions are square (I don’t think it much matters if you’ve got 56x56 or 480x480 or anything in between, just as long as it’s square)

2: I like using jpeg, though I think it will take other formats.

3: The pic should be under 20kb. Sometimes it may let a bigger file through for some reason, but if you want it to work consistently, this will do it.

Personally, I usually use MediaMonkey to get the artwork with “autotag from web”, and that usually seems to work.  But if the album art isn’t available, doesn’t work for some reason, or I want an alternative pic, I use the free paint.net to edit pictures to achieve these results and it’s worked every time.  It can be a bit time consuming, but the results are good.  You can’t tell the difference between a 20kb pic and a 240kb pic on such a small scree, so it doesn’t make sense to clutter up your player with extra big pictures anyway.