SanDisk Clip 2GB copies and skips songs randomly

Your Mac is inserting Finder “ghost” files that although 0kb size are being interpreted by your player as actual songs. Finding nothing in the file, the player naturally skips over them. They will also ‘count’ as tracks as far as the counter goes.

This thread discusses the issue as well as this one and this one and this one.

And if you use the Search function here, you’ll discover many more.