I am a satisified, human owner of a SanDisk Clip Sport.
I do not mind having separate Music databases on the internal memory and on the external micro SD card.
I think of this player as way more convenient and flexible than an iPod nano (and way cheaper).
I am getting used to saving my favorite tunes on the internal memory and swapping music files on the SD card and using multiple SD cards for more variety. Also, I am discovering that Best Buy usually has a name brand 16 GB micro SD card on sale almost every week for $10 or less (for a Class 10 card).