PC or Mac? If PC the drivers automatically load with the installation of Kies, no need to do anything else. When I use a PC for file transfer after installing Kies to get the drivers, I use explorer to move files from computer to phone and phone to computer not Kies. Much easier and just drag and drop when you have two explorer windows open at the same time. On a Mac use Android File Transfer, available to download here on Android Central. Same process just drag and drop files. To put a file on your phone just create a folder on the sd memory, music for audio files, video for video files, pictures for picture files, etc the system will find them.