clip jam 1.13 255 song limit w/USB connector in car

Only 255 of 1000 songs on clip jam 1.13 show up in car when connected by USB. Headphone jack shows all songs. No reshuffle possible in USB connection. Sems to be the car radio limitations (memory backup stick gives same result). Any solutions out there? Thanks.

3 possibilities that I can think of at the moment:

1.) Are all the songs/tracks mp3 or .wma format?

2.) Are ID3 tags present and/or correct for the missing songs?

3.) The head unit in your car has an extremely low database recognition. If this, we can’t help with that. Better to check & see if there’s a forum for your car & see if anyone else has the same issues.