FEATURE: Improve metadata status bar

[xxxserxxx]

It might be nice to improve the status bar. Some ideas:

• Offer more information: Artist & Album, in addition to Title
• With tview, it should be possible to implement a progress bar behind the position/length, or maybe across the entire bar
• It might look better to put the current-playing metadata in the center, and put the current tab on the left
• Offer a couple of status bar styles: brief, detailed, metadata-center, metadata-left, etc.
• The "current page" could be displayed elsewhere, or shortened to simply a number to free up space. Maybe displayed vertically to the left? Anyhow, reserving the status bar for the currently playing information would be better.