I need help creating a randomized list of songs

[Ramon]

You can find some examples searching...

JukeBox:

App Inventor Extensions: File | Pura Vida Apps

Other:

Making a music player in MIT App Inventor

Yes, and @mert_akalin should definitely refer to it (not least because I also show the blocks there): It lists MP3s from the removable SD card (if you have one), but of course there's no problem listing MP3s from the emulated SD card as well.