Tested the Tone player, but the EDUR:value have not influence, 500 or 5000 are the same on my Phone, only produce a very short tone. It's possible to regulate the volume too?
@sato If the tone is shorter than set EDUR time, it will stop playing. If it is longer, it should stop after a specified EDUR time. Did you check the manual (EDUR property describes that it is ignored if tone duration is shorter)?