So about ten years ago I was working at a place where software was being written to support MP3 players and gather different forms of content into a new and daily upload for your MP3 player. There were a number of problems, not the least of which was the fact that you couldn't really control the daily feed that was put together. In addition, you couldn't advance through the songs something like more than 3 or so times an hour. The MP3 players were, for the most part, built by iRiver, which as I recall was a Korean company. I think at the time, their largest player was 4 megabytes.