need some guidence

Hi arduino forum! im trying to make a device that will better my family. i need to program the arduino to take a line in from a microphone and simply play it at the same time and at the same frequency! i have no experience with this at all and little experience with arduino so any help would be great. any online programing tutorials or sample code just to get the ball rolling would be great! :grin:

Why does this require an Arduino? Won't an amplifier and speaker do?

Be aware that arduino internal ADC sampling is ~10K samples/second. You will need some external amplification and filtering, and the output will maybe old telephone sound quality.

I'm with dxw00d on this, until more info is provided.