lining up first measure
What is the best way to get the first measure of music to line up with the tempo map (Ex: I want the downbeat of the song to land on measure 1 of the 1st meaure of music) the track I am using has some lead in prior to the first downbeat that isn't in time. Should I edit the track using Pro-Tools or is there a way to do it in Reaper. Editing the rest of the track should be a breeze because its recorded to a metronome with absolutely no tempo changes, just trying to line up the first measure and having no success thus far. Thanks in advance.