Need Help on AT83SND2C/AT89C51SND2C?

Main thing is i want to build mp3 player i've seen this microcontroller having builtin mp3 decoder but don't have any experties in microcontroller and decoder stuff but i need to know that which things i'll be needing in this project???
Thanks every one for reading this and taking ur time for this take care Bbye

You'll be needing knowledge, common sense and coffee. Start Googling and reading :lol:

i'm also building a project named Digital voice recorder.
I also want a microcontroller that could encode my stored sampled voice into mp3 format.
Give me details of circuit and microcontroller that you are stating
I'll find consult my project guide regarding our common problem