SD card saying "file format not supported" on every new song I add. internal memory no issue.

[dfeld2005]

If you have more than approx. 2000 music files on your SD card, then it is likely you exceeded the database capacity of the player.

Next best fix is to let the player reformat the SD card.

      16gb micro SD cards are best for the current generation of Clip Jam (and Clip Sport).