While figuring out the intraceses of mixing and mastering I would like to merely record all my tracks dry and then give my sd card to a buddy that has tracked, mixed and mastered for me in the past and have him do it. When I asked him about this he said he doesn't have an input for an sd card. I just accepted that answer and we moved on to other topics. Its a "real" recording studio. He has the latest gear and version of pro tools. I thought I could just mail the sd card and he would be able to open it up and manipulate the tracks from there. Is there a device I could buy and send him-or he could buy and I would reimburse him-to make this happen You all talk about uploading tracks to a computer and mixing etc from there. I was surprised by his answer. What magic device do we need knowing **I cannot see him in person all I can do is send the sd card.