Switch to side-by-side view

--- a/GUI/player/GUI_Player.ui
+++ b/GUI/player/GUI_Player.ui
@@ -42,6 +42,12 @@
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QVBoxLayout" name="verticalLayout_2">
+    <property name="spacing">
+     <number>0</number>
+    </property>
+    <property name="margin">
+     <number>0</number>
+    </property>
     <item>
      <widget class="QSplitter" name="splitter">
       <property name="orientation">
@@ -54,6 +60,9 @@
         </property>
         <item>
          <layout class="QGridLayout" name="gridLayout">
+          <property name="horizontalSpacing">
+           <number>4</number>
+          </property>
           <property name="verticalSpacing">
            <number>0</number>
           </property>