Yeah placements are difficult especially when for example for history I think it is you get 9 and for all the rest it is 10. It just throws out a design completely.
The larger screen you skin for it does get easier, I was trying to skin for 4:3 that is a nightmare, but then you make things a bit smaller, and make the buttons bigger to compensate for empty spaces. I see a lot of space you can claim back at the top of your main page, if you got rid of the volume and slider control and make a selection. I personally hate that which is why I never include it with mine, I have my volume set by my home cinema so I can adjust the volume on that, yes ok you might get a phone call, but for me my volume control is next to the phone anyway, so I can just adjust as need be.
It is just personal preference really, but if that was a party for example, I have always said that you don't want a drunk guest pausing the track or turning it down. If you look at a lot of commercial jukeboxes nowadays they are literally stripped of features and back to basics.
I personally again do not like the swipe features, that is one feature that they introduced to involve the smart phone generation, but at home you would get RSI putting music on all the time, maybe for five tracks in the pub, it is not too bad, but for personal use, then a big no no.
I honestly think looking at your photoshop skills, you could really make a very good skin, if you didn't and no offence to Coffee, copy Coffee and have tea instead lol
Regards
Mark