I just went through that. wow headaches. oh wait still going through it, found so many problems from that darned click. turned out to be crank loose, rings loose, etc.
the next day or something crazy the noise came back only different.... I had chewed a bearing square in my front hub. how it felt and sounded like a bottom bracket issue I cannot telll you. But that got repacked and I am hoping the drive train holds till I find cheap used quality cranks so I can buy rings.
why the troubles why. I just wanna ride.
and yes I know that sounds crazy, the wheel issue. sounds like that ain't it for you. but just in case.