Developer's DescriptionBy GDSOFTBuy a new machine will find the built-in speakers sound generally not good to use a special method allows the speaker to be more pleasant, can...Buy a new machine will find the built-in speakers sound generally not good to use a special method allows the speaker to be more pleasant, can also be used on the external speakers and headphonesUse the longer, will better listen Oh!Note:The program principle is to use the fixed audio consecutive drive the speakers, the new speaker activated, if caused by improper use caused by any failure assumes no responsibility, careful use