CSS to make Prime Player's mini-player look nice for live-streaming. Use the "Normal" layout option with this

prime-player-tweaks.css

* {
	font-family: "Segoe UI", sans-serif;
}
#player {
	background-color: #0F0F0F !important;
	height: 104px !important;
}
#top {
	height: 80px !important;
}
#cover {
	height: 96px !important;
	width: 96px !important;
}
#song>a {
	font-size: 13px !important;
	margin-bottom: 8px !important;
}
#song>a#track {
	font-size: 20px !important;
	margin-bottom: 14px !important;
}
#time {
	background-color: transparent !important;
}
#playControls, #rightbuttons, #lastfmInfo {
	display: none;
}

prime-player-tweaks.js

document.getElementsByTagName("head")[0].innerHTML += "<style id='styleTweaks'></style>";
document.getElementById("styleTweaks").innerHTML = "* {font-family: \"Segoe UI\", sans-serif;} #player {background-color: #0F0F0F !important; height: 104px !important;} #top {height: 80px !important;} #cover {height: 96px !important; width: 96px !important;} #song>a {font-size: 16px !important;	margin-bottom: 8px !important;} #song>a#track {	font-size: 20px !important; margin-bottom: 14px !important;} #time { background-color: transparent !important;} #playControls, #rightbuttons, #lastfmInfo {display: none;}";