OK lets start with my biggest gripe. It will not work on Linux! As you can see in the screenshot, it appears in my disk utility, but not in my "devices" list. It should show up like an external drive, according to instructions, but nope. If you use Linux, look elsewhere for a player. That is, unless like me, you have access to the windows virus on a spare PC or laptop. That's what I did. I waded through the chest-deep crap and trash and the endless "update now!" and the Windows can not spy on you. log in to this spyware.." popup crap. I had to take music from my Linux machine, tranasfer it to a USB drive, then plug the drive into my windows-virused laptop and put the music on there. Only then, could I get music onto this player. What a pain in the rear! So hey WD/Sandisk, Just make the darn thing work with Linux, guys! It's a real thing, and it's not going away. Especially since even your servers, Amazons servers, even Microsofts and Apples servers all run... LINUX! Android is a version of Linux. So yeah, Sandisk, Linux is something you people should keep in mind with your devices. Your SD cards and USB drives work flawlessly in my Linux machine, Why did this player give me hell? A lesser gripe is that the screen on this player came pre-scratched. I took it from the original, still-sealed packaging, and it was scuffed up right on the screen. There was no screen protector film to peel off. A .001 cent piece of cling film plastic would have prevented this. However, that hardly obscures the screen when it is lit up, and does not affect any performance. It's just annoying that this happened. The last gripe, I promise. That is, there is some pre-loaded bloat. I don't need any audiobooks or lap timers and crap like that. I just want to play music. Period. But, that is the least of my gripes since Sandisk has kindly offered a setting to turn that junk off. Now for the good stuff: It works. Despite being forced to use the Macrohard Windurrs virus, to do it, I dragged a lump of random music into this thing. I just wanted to be done with that windows machine, fast, so I didn't bother to sort them. After ejecting the player and it initializing, it works fine. Sound is good via my KZ ZSN Pro IEM's (This is going to be a gift. I did not use the included buds) I was shocked to discover that the lump of music I dropped into this thing was all free lossless audio codec. Yes, FLAC! It plays flac files. NICE! The jumbled mess of content is all categorized into artis, album etc folder by the device. By "lump of music" and "jumbled mess" I mean about 8 compilation albums with various artists and such. It will sort them by artist or album if you wish, or it can just play the bulk. You can make playlists, but I'll leave that to the person who I am gifting this to. I'm only doing any of this since he has no access to a computer or anything other than cellphone internet. Otherwise, he's be setting it up himself. But I don't mind, so here I am. Which allows me to write a proper review. So to conclude: If you have windurrs or mack junk, you can use this no problem. But if you have Linux exclusively, You're gonna have a problem. (Get a Surfans F-20 D.A.P.. It doesn't care.) It works fine. You can turn off the bloatware. It plays fine, it sounds fine. (with flacs, have not tried it with lossy, MP3 files) I may update with further info about durability and longevity after I give this to my friend and he lets me know about that stuff.