Re: Issue adding music to slideshow

If the track is being selected from, or used in iTunes try deleting artwork images. To remove the embedded album artwork from the file in iTunes:

1. In iTunes, select the song from which you want to remove the artwork, and choose File > Get Info.
2. Click the Artwork tab, and then click once on the current artwork to select it.
3. Click Delete to remove the artwork.
4. Now try to import the MP3/M4A track to the slideshow.