Hi, Maliek!
I've had my own routine for "voice-overs" or "narration". I tend to complete my editing to a stage where I have all my clips in place, all transitions, titles, music(not always used), opening and closing visual effects and any captions. I render this once, then, either immediately, or perhaps later, I'll open up the finished render and watch it via Windows Media Player(I'm still using Windows 7), with an empty "Word" document opened. I view the video, then, pausing at points through the video, I type in what I want to say at that point. When that's complete, I print out my "narration script", then I record an MP3 audio "track", which I import into PD14(or 8 if I decide to use it) along with the video, dropping the video onto its timeline first, I play it until the point appears for my first comment. I drop the narration track onto(in PD14) any unused audio track, or(in PD

either the voice-over or music track. I play until I reach the end of each "comment", split the audio track at that point, then,(with Ctrl+X) cut the remaining audio track and paste it at the point of my next comment, repeating the process until all comments are in place. Labourious, yeah! Time-consuming, yes to that too! But I do get the result I want. "It works for me!" The audio software I use: Sony Sound Forge!
Cheers!
Neil.