Copy the 'atmosphere' folder to the root of your microSD card, then scroll down to the very bottom of the original songlist to find them (it's a LayeredFS-mod for testing purposes). How to properly insert your custom musical tracks: *** Music Racer can support custom (user-based) music tracks via LayeredFS-mod. Copy desired MP3 files in /atmosphere/contents/010046400F310000/romfs/Data/StreamingAssets/Music/ folder. In the name of the files MUST BE ONE 'minus' sign, with the capital letter, and no spaces or non-ASCII characters. Just like that: Test-test.mp3 Then, after copying your music, go to ingame select music screen, and your custom musical tracks must be there in the list. ! Some song files crashes Switch for unknown reasons, so be careful. ! Original author is Archargelod. Thank you! *** IMPORTANT (READ ALL BELOW): all file names of the tracks should be short, NOT longer than 25 characters per track. It is best to write the number at the beginning of the filename with a couple of words from the trackname, separated by underlining (for example: "06-Never_Be_The_Same_Again.mp3"), so all your custom music will be located at the very bottom of the original songlist, and there will be less trouble scrolling through it. To quickly get them in the game, just hold the left analog stick down to the end of the song in selection menu, then select them by D-Pad Up. It is best to use NO MORE THAN 15 tracks in the LayeredFS mode at once (so that there are less problems with paging through the songlist). Tested music format has the following properties: Codec profile : MP3 CBR Sample rate : 44100 Hz Channels : 2 Bitrate : 320 kbps Encoding : lossy Tool : LAME3.99r Tag type : id3v2.3|id3v1 : yes : joint stereo The lenght of the longest tested musictrack was: 7:34 minutes, filesize: 17 MB. The total filesize of all 15 tracks: 120 MB.