Compatibility: Windows 98/Me/NT/2000/XP/2003a Apple needed the majors to get iTunes moving, and Jobs sought a licensing deal with one label that could serve as a template for the others. He eventually got Warner on board, then Universal and EMI. But as Walter Isaacson detailed in his biography of Jobs. Sony Music dragged its feet. From Sony’s perspective, iTunes wasn't just Apple's play for the digital music software market, it was a major bid for the hardware market, too, which would dramatically increase the appeal of Apple's iPod and threaten Sony products like the Walkman. One service above all others has been responsible for creating a viable commercial market for music online: iTunes. Before you merge mp3 , you are allowed to set some advanced parameters including mode, audio bitrate etc. to meet your professional or casual needs. It is small and delicate with friendly and intuitive interface that you can operate with ease. The most important point is that it is totally free of charge. Click the "Create" button to pop up the Output window, hit the Format tab, and then select the MP3 output format to export the single MP3 file.