I've read several other topics about this but haven't found, or missed, the problem I'm having with adding music from my pc. In case this is the issue to save time reading: I don't have an sdcard inserted and my songs would be from my iTunes library. I plug in the usb cable that connects my phone to the computer. A screen pops up and I select "Disk drive". A window pops up on my pc for the program to select. All of the options are to watch/listen to media from my phone. I cannot find any options to transfer songs to my DI. Any ideas on what I'm doing wrong?