dirkrenders

Hi, I've made a number of Daisy MP3 players for a project, working just fine ... http://www.teuthis.com/daisy/index.html The question now is to make a few changes to the design to make it more suited for a new application. 1. letting it use SD/HC also instead of now only SD (as the regular SD cards become more and more difficult to buy) 2. adding (or programming) something in it to make it stop working after a periode of time (e.g. 1 year), unless a new music collection is placed into it (with the MP3's having some sort of unlocking code in their tag or something ?). Could/would somebody help me with this please ? Greetings