Hi Nic,

I am sorry I do not have answer to your questions,
but I am a college student and currently I am also handling a project on MP3 Player, and I also chose AT89C51SND1C.

I need help, I have some questions if you don't mind answering.

1. Do you know where I can purchase one chip of AT89C51SND1C?
2. Does the PLCC84 package chip available on market?
3. May I know what Development software do you use for the chip?
4. What do you think is more suitable for a student with a limited budget like me, the AT89DVK-04 or the AT89RFD-01, because I need something with lots of information to build an MP3 Player
5. Does the AT89DVK-04 and AT89RFD-01 include the detailed specifications of the board such as resistor values, IC part numbers, etc?
6. Did you buy any of them?

Thank you very much for your help.

Regards,
Mario