FYI. I am still enjoying all the cute features of my SanDisk Clip Sport with a 16 gb micro SD card.
I bought a second unit to keep it company on my nightstand.
I made mp3 copies of some old cassette mix tapes. These mp3 files are 45 min each. When I play one in the Music Folder and then stop and switch to another music file, I lose my place.
But, if I put these 45 min mp3 files in a sub-folder in the Audiobooks folder and use the Books playback, my Sport Clip saves a resume marker for future playback. Very Handy Feature !!!