Audio dialog cosmetic changes

sdrgui/gui/audiodialog.ui

@@ -210,7 +210,7 @@
             <string>Copy audio to UDP</string>
            </property>
            <property name="text">
-            <string>U</string>
+            <string>UDP</string>
            </property>
           </widget>
          </item>
@@ -222,6 +222,9 @@
              <height>0</height>
             </size>
            </property>
+           <property name="toolTip">
+            <string>Channel copy mode</string>
+           </property>
            <item>
             <property name="text">
              <string>Left</string>
@@ -250,7 +253,7 @@
             <string>Use RTP protocol</string>
            </property>
            <property name="text">
-            <string>R</string>
+            <string>RTP</string>
            </property>
           </widget>
          </item>

sdrgui/gui/audioselectdialog.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>400</width>
+    <width>527</width>
     <height>349</height>
    </rect>
   </property>
@@ -42,6 +42,9 @@
       <property name="text">
        <string>Rate</string>
       </property>
+      <property name="textAlignment">
+       <set>AlignRight|AlignVCenter</set>
+      </property>
      </column>
     </widget>
    </item>