Hey! So you adjust fades by dragging the circles at the top of the track region, right? To trim the track, you move the vertical line that the circle rests on. And if you grab the middle area between all the handles, you can move the region on the timeline left and right.
https://i.imgur.com/w1XRqAg.mp4
(sorry for an imgur link, something is wrong with video uploads in comments on itch)
In the upcoming version you’ll also be able to ctrl+click to set left and right ends of the trimmed region, and right click to align the region with 0:00. Should be up this week.