that works but you only have 1 object but 3 references to it, if you want to load 1 sound but play it several times simultaneously you have to use multiplay instead:
soundPlayer1.loadSound(audioFolder + "/" + dmtr.parametrosString["AUDIOSREICH"]);
soundPlayer1.setMultiplay(true);
then when you call play instead of stopping the last sound before starting a new one it'll just start a new instance of the sound but will keep playing the previous one too