Did some research about DFPlayer mini and... WOW I cannot use that chinesse gem, sound quality wise it is more suitable for making birthday card from late 90s that singed when you opened it, than for hi-fi standard that I need. Problem with file names is one thing, but I cant go past the sound quality....
Leaning more towards iPod or it is perhaps time to find usb mp3 player device that has some type of uart, i2c, ttl,... communication for display and alot of study to translate the data into text...
Would need a spare car stereo with usb that I could open and see what ic is used for decoding mp3...
I opened cheap xplore headunit yesterday and to my expectations found another chinesse IC that is not only small for soldering, but also there is no datasheet for it.