I appreciate you taking the time to express your situation. I'll be happy to send this to the appropriate department and checking to see if there are any other options that may be available for you.
I currently own a Samsung YP-R1 and I have been fascinated by its enhanced sound effects created by DNSe technology. The problem with this portable media player is that it can only be charged via USB and there is no wall charger for it at all. While it seems that USB can do anything these days, I urge Samsung to spare a thought for people whose working environment forbids the use of USB cables due to security reasons. Samsung not only does not produce a wall charger for YP-R1, it also made the USB port of the player a propriety one which effectively eliminates 3rd party wall charger as well.
Perhaps Samsung can produce such chargers and sell it separately from the player. In this way, people like me would not need to carefully ration the use of the player to sustain me throughout the week.