This page contains a collection of information about the fgpa on the pjrc mp3 player.
How do I install this in my player?
Download the complete firmware to your player as per the pjrc instructions or recompile the code with the mp3.mcs file replaced.
How do I know which FPGA I'm using?
The startup screen will tell you which device you are using. It will either say "Config FPGA: OK (pjrc)" or "Config FPGA: OK (vhdl)"
Why would I want to use this?
To help me test it. Otherwise I'm not sure since it is the same as the pjrc download at the moment.