> The sidebar is a "now playing" playlist and I think the most interesting part of the app.

Why is mine filled with things that aren't playing and I haven't played? If that is its intended purpose, then it needs to convey that a little better by not filling it with other unrelated content for no reason. As someone who rarely uses sub-lists and typically just flips around the main library, copying the entire existing library to the sidebar isn't a great idea. I get it for playlists and other subsections, not so much for the entire unfiltered library.

> You can hide the browser by right clicking the header and selecting 'hidden'.

Good call, although this is a UI issue in and of itself. No function like that should be hidden behind a right click, something many Mac OS X users don't even know how to do.

I'm having trouble putting it in words. Maybe thats a bad sign. Its kind of like the iTunes DJ but not really. I can tell you that nothing in there is unrelated. Imagine the main library is a completely separate entity from the 'player'. The music player plays from the sidebar. You fill the sidebar with songs from the library.

And yeah I probably should add a menu item for hiding the browser.

I got that in a second reading, and I edited my comment accordingly, here is the relevant bit:

> As someone who rarely uses sub-lists and typically just flips around the main library, copying the entire existing library to the sidebar isn't a great idea. I get it for playlists and other subsections, not so much for the entire unfiltered library.

I guess it's not so simple if the app is built around that concept. I always use my main library and rarely have an urge to structure a queue, so maybe it's just not the app for me.