Rat wrote:I know it's not an ideal solution, and involves a lot of work, but one option is to copy all your favorite songs from a lot of different artists or albums into large folders and sort that folder on a somewhat random basis (e.g. by size of the file, or whether it is mp3 or wma) then copying to the USB stick in that order and then playing the folder in straight order. It's not truly random, but at least you will get every song. There are also programs that allow you to create playlists, selecting songs in whatever order you want from different folders. That's more work, but you can use those.
I know this is an old thread, but I was having trouble playing MP3 files from a USB thumb drive in a 2018 LEAF. I got it working. Turns out that my older 4GB drive is not recognized by the LEAF, which I believe is USB 2 (formatted as FAT32, default format option). My newer USB 3 thumb-drive did work just fine.
Also, be careful about how you organize songs. It'll play them in the order they were in when copied, whether you sorted by name over track order. If you sort by track order and then copy, the songs are in the expected album order. When sorted by name, you get some variants of the song playing together, along with songs later in an album which may not be as good (not to mention breaking the flow of the album as designed by the band and producers).
So, if you're gonna pick up a little USB drive for MP3 files, get a USB drive and format it as FAT32 before copying music.
The tips about file/folder naming here are good and I used those. Thanks!