How do you access pokeflute in gold? - Answers

Firstly you have to fix the powerplant by getting the missing machine part. After you have returned the missing part to the owner of the powerplant, go to Lavender Town. Go into the radio tower on the right. In there will be an old man. When you speak to him he will say something along the lines of "so you are the one who fixed the powerplant", and then he will give you a radio card for the Kanto region. Then, go to your PokeGear, and select the radio. Look for the Poke Flute Channel towards the right end of the radio signal. Do this when you are standing in front of Snorlax just outside Vermilion City. Then, when the pokeflute is playing, "talk" to Snorlax, he will wake up and you can battle him. He is at Level 50.