When I first received my AK240; I spent about a week filling up the internal 256 GB. Yes, it was a HUGE pain doing it on my MacMini with the absolute worthless Android File Transfer program. When I finally, finally got everything transferred over; I don't ever touch the internal memory or the AFT program ever again. I bought a 200GB MicroSD card and shuffle music around on that. Adding and deleting albums as needed. I put my favorite artists and albums on the internal memory so I shouldn't ever need to touch it again. If I had to constantly update the music on the player itself; I would probably end up throwing the AK240 out the window and smashing my Mac. It is THAT frustrating with the constant freezing, crashing, and stupid error messages about the device being locked when the screen is on during transfer. I pop out the MicroSD card whenever I need to add any new music. Works perfect. No more headaches. Just suffer through the initial music transfer to internal memory and then quickly buy a large MicroSD card and save yourself all the hassle. I tried at least two dozen USB cables, including the iRiver one. I tried plugging it straight into the Mac, using numerous hubs (powered and not) and nothing, I mean NOTHING makes a difference. It is the AFT program plain and simple.
That's a pretty good plan. My MicroSD seems to come disconnected occasionally, even though it's in the slot.
I do agree, this unit should plug in and show up like a drive on any Windows or Mac platform. There's no reason it shouldn't look like a simple hard drive to any computer. Copy your files over and get to listening.
Still-- gotta say-- these DSD files are the most pure and pristine form of music I've put through my Woo amp. I still love vinyl, but nothing compares to the AK that I've heard.