Hi, I've just installed the plugin and tried it out. Really nice work. It's pretty awesome that people with these kinds of skills (programming) are willing to share them with the rest of us through plugins, themes, and other assorted wizardry :)
Anyway, here's my question: I'd like to make downloads available by setting a minimum price and the user is free to edit it if they want to pay more to the artist. I want people to have the option of choosing their own price, and for me, I think a simple textbox (with a minimum amount specified) would be a less crowded and more visually attractive solution than setting a bunch of different price points for users. Also, according to sales figures from places like Bandcamp.com, it also results in a greater bottom line.
Is there some feature where I can choose this, or can I add some code to one of the files? I'm not a programmer beyond simple HTML and CSS, but my copy/paste skills are top notch and I follow directions well (most of the time, given a few attempts :D )