I've created multiple awsome songs using Famitracker. and I was wondering how would one go putting the .NSF file into a N.E.S game. preferably megaman or Kirby.:suspicion: Thanks for the help, as it is appreciated.
As a general rule, you can't. Each game has it's own audio engine which is not interchangeable with another. In other words Famitracker only creates tracks for the Famitracker player engine which is embedded in Famitracker-produced NSFs. If you want to alter an existing game's music then you must reverse engineer or rewrite the game's existing engine and then create your original content to suit the engine/game's constraints (instruments, tempo, ROM space, data structures, CPU time, memory mapper etc). It might be possible to hack the Famitracker player into an existing game, or more likely rewrite an existing game in order to allocate the FT player, but that's a ridiculously involved task.
fwiw i definitely recall there being a music editor for one of the megaman roms? but like Calpis said, easily just taking your music and throwing it into any rom isn't gonna be too fun