mi rispondo solo
codice:
<%
Dim objFso, objFolder, objFiles
Dim strFolder, strFile, strPath, strExt
' Definisci il percorso della cartella da leggere
strPath = "file/"
strExt = ".mp3"
Set objFso = Server.createObject("Scripting.FileSystemObject")
Set objFolder = objFso.GetFolder(Server.MapPath(strPath))
Set objFiles = objFolder.Files
Response.write("<select name=""canzone"" id=""canzone"">")
Response.Write("<option value=""Seleziona"">Seleziona brano</option>")
for each strFile in objFiles
if Right(lcase(strFile.name), Len(strExt)) = lcase(strExt) then
Response.Write("<option value="""&strFile.name&""">"&strFile.name&"</option>")
end if
next
Set objFso = Nothing
Set objFolder = Nothing
Set objFiles = Nothing
%>