Just bought my 2024 Ram 3500 Limited last month. I have carried a USB media player loaded with all of my favorite music for years. When I plug it in on the new 2024, the stereo recognizes that a USB device is plugged in but comes up with the message "Media Files Not Found". Thinking that maybe my media player was using an outdated format, I bought a new 256GB USB flash drive and loaded music on it. The result is the same. Swapped the source port in the stereo settings and tested both devices on the # 2 port. Same result. Plugged both devices into my wife's 2023 Hyundai and they both work with no issues. I asked the service writer at the dealer where I purchased the truck about it....and in true "you bought the truck and now we don't care" form, he replied..."I don't know what to tell you" and promptly went back to working on his computer as if I was not even standing there. Sure hope I can find a simple fix here...because it really pains me to think about having to deal with any of the local Ram "service" people....