Link audio files in Google Drive folder in a Google Sheet

I have hundreds of audio files (.mp3) in a Google Drive folder that I need to list with links in a Google Sheet. Very similar to the problem described here, but I was not able to adapt the code to .mp3 files. The example code that I adapted:

function ListFldPdfs() {  // replace FOLDER-ID with your folder's ID  // replace SHEET-NAME with the name of the sheet that will hold the list  var myPDFfolder = DriveApp.getFolderById('FOLDER-ID'); // replace FOLDER-ID with your folder's ID  var thesheet = 'SHEET-NAME' // give a name to YOUR list sheet  var ss = SpreadsheetApp.getActiveSpreadsheet();  var newPDFsheet = ss.getSheetByName(thesheet);      if (!newPDFsheet) {        ss.insertSheet(thesheet, 0);        var newPDFsheet = ss.getSheetByName(thesheet) ;  Logger.log(SpreadsheetApp.getActiveSheet().getName());     }  // clear all existing content  newPDFsheet.clear();  // append the header row  newPDFsheet.appendRow([ "Name", "VIEW", "HYPERLINK"]);  var results = [];  // list all pdf files in the folder  var mypdfs = myPDFfolder.getFilesByType('audio/mp3');  // loop through found files in the folder  while (mypdfs.hasNext()) {     var myfile = mypdfs.next();     var fname = myfile.getName();    var furl = myfile.getUrl();    results = [ fname, furl, ];    //Logger.log("results = "+results); // for de-bugging    newPDFsheet.appendRow(results);        }      var fcell = ss.getSheetByName(thesheet).getRange("C2");                fcell.setFormula('=arrayformula(if(A2:A10="",,hyperlink(B2:B10,""&A2:A10&"")))'); }

This code effectively creates a new sheet in my Google Sheet with the columns Name, VIEW and HYPERLINK, but without listing the actual files in the original folder or providing links to see them. I appreciate any help on this.