I haven't found it very useful - you can't just get to where you want to split and mark the location - you can only split by manually typing in the exact periods (in seconds) that you want to split from/to. If you are splitting up a file into multiple sections, you have to enter all sections in one go, which means you have to go through and work out all the periods manually and type them in. I've been looking for a tool that I can simply play through the track, mark the points where I want the splits to be, and then click split - I'll keep looking!