I just received my second M240 as a replacement for the first one, which was defective. If I was lucky, I could get it to play -- only to have the volume control automatically turn the volume down after 3-4 seconds of play (almost like playing a CD in preview mode). I was SURE this was the one-in-a-million unit that was defective and didn't hesitate to call for a replacement (which Amazon replaced in two days). I was pleased with the player until I discovered that the "Select" button wouldn't bring up the playlist or add to favorites - which renders the player useless, in my opinion. So - my experience with the M240 has not been good at all.I liked the look and feel of the unit as well as the way it fit in my shirt pocket, virtually weightless. I'm really disappointed in SanDisk and will not buy their products again. I will advise others to avoid buying this unit as well. It is an inferior/defective product -- don't buy one!!