Photo slide show with background music

Good morning,
I have a problem MED500X firmware 4.04. When you turn on background music and then turn the slide show by pressing the stop button or the return off the background music. To re-enable the slideshow with music I first turn on the music again and again to the image. This is very annoying. The 3.04 firmware did not have this problem. After pressing return I walked to the folder with pictures and background music still playing. After the firmware update function stopped working. I tried twice to update the firmware and then the music switches off after pressing return or stop. I tried the first turn on the music when playing only music and photos only from the directory and still the same. Please help. I watch a lot of pictures and it is very cumbersome.