Programa Para Convertir Wav A Mp3

Everyone I know who has used this program, and I know many, have complained and agonized over how to minimize, maximize or close the window as the program does not open in a standard way. There are no classic icons for performing these tasks , in the upper right hand corner of the window. I finally found that the way to trigger their appearance is to click on the that 'stretch box' icon , in the bottom toolbar. I heard a Function key will do it too. Why not have the program launch with this feature enabled ? Every other windows-based program does and we all want to be able to toggle between windows and programs. Thanks.