I'm sorry if this has been posted before but I am trying to find out what is the best program without breaking the bank to add an .mp3 remix to an existing .mp4 video in other words let the new remix replace the existing audio in the video and save as a new video with the new remix. I've tried searching online and youtube and not getting any luck.

On that note what is the best way to sync the video with the new remix. Is this something that is in the program? Windows or Mac suggestions are welcomed.

I am familiar with Acid Pro, FL Studio, Serato, Mixed in Key and Traktor if that helps.

Thanks in advance.