WM Splitter is a small and easy to use application that will enable you to trim and even join together audio and video files. Simply load a media file into the program and place markers along the timeline where you want to exclude, or keep, a potion of the file. WM Splitter allows you to mark your sections using a variety of navigation tools that give you precise control, including frame-by-frame, time based, and even K-Frames. Once you have finished marking the section you simply press the "trim" button and your edited file is saved, along side your original file. WM Splitter has a "join manager" that allows you to easily join files of the same file type. It's super fast and easy.