Just noticed a nice little touch by Microsoft at Zune player when running on Windows 7. When you move the mouse cursor over the running Zune application button on the taskbar you see a mini-player in the preview window that pops up. It even has a “heart” button there to rate the current song as a favorite one (full heart) or one you dislike (broken heart). Note that songs rated as dislikes can be configured at Zune settings to not sync with external portable devices.
There is one bug there though, it only shows the album/song title (alternating at every popup of the preview [the taskbar previews are live window previews btw on Windows 7]) if the Zune application is minimized. Else it doesn’t show the title at the top of the preview window.