MP3 Player Usable by Totally-Blind Operator

I am totally blind, and I run on a treadmill each weekday. I have been using CD-type MP3 players; but my complaint on these units is that after they have a few months of wear, they often skip frequently when I am running at speeds of 6 to 7 MPH. I think I want a memory-based player with no moving parts to cause skips; but I need advice on a player with flash memory that would also be quite usable by a totally-blind person. I must be able to load music onto it, navigate among groups of songs and play them, have some access to the tone-control system and the repeat/shuffle functions, and be able to remove songs no longer wanted. Of course, to be able to load songs onto the unit, it must either allow songs to be selected in Windows Explorer and behave as another drive when connected to a USB port; or if it REQUIRES its own software to load songs, this software must be TRUE TEXT NON-GRAPHICAL in nature so that I can use it in the same way that I can copy and move files now in Windows Explorer or My Computer. As an example of one popular system that WILL NO"T work for me, Sony's Sonic Stage software has a visual-only interface at the front end so that I was asked to select the country of purchase before I could even install the software. This country-selection system was TOTALLY GRAPHICAL, and I could not operate it. Other memory-based players apparently come with bundled and required software that is TOTALLY GRAPHICAL in nature and will not work with the screen-reading software that we use to read true text on our computers without sight. I would like to keep the price somewhere in the range of $50 to $100 or slightly higher, so that I am not using a very expensive unit for running. I will appreciate any help you can provide.

Incidentally, another problem I have had as a blind person seeking small electronics is that the equipment is often packaged in blister packs so that I get no hands-on operation before buying it; the persons in the stores often do not know much about the equipment either.