This is me spamming same stuff that was before in this thread. But I like this player and can´t help myself so had to repeat. If you feel using imperative offensive then I apologize it. Just means that I´m little too passionate about little things and these are of course just suggestions

General
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Disable maemo default list item background highlighting (like fapman does).

Full screen button is visible in some views. Make consistent.
-> Library view and sorting are not in full screen while main view is. Try to keep fullscreen-button in same place for all views so that user doesn´t have to "learn" it´s location every time.

Get rid top and bottom bezels at least when not in full screen (landscape).

Bezels appear but they disappear after going to library view
-->after that also sorting view looks different

Why no type-to-search functionality?

Changing trough different views with just flick (like in desktop) would be awesome.

Playlist view
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Make enqueued songs different color and add number after them to show their current position in que.

Currently playing item is unreadable with default colors because of highlighting. (gray text, blue highlighting)

Clear play-list could be also in top-popup-menu

Left "action" button before song name could be something little different. Maybe square box/button that has little arrow DOWN and also maybe more space between button and song name or perhaps little vertical line in background to distinct this button as action button.

Album art / now playing
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action buttons around album art do not always work.

Volume slider would be nice.( right side of screen, vertical slider)

.edit
I used player only in landscape.