Add this to ~/.config/openbox/lxde-rc.xml

<!-- Keybindings for window tiling -->
<keybind key="W-Left">        # HalfLeftScreen
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <x>0</x><y>0</y>
    <height>97%</height>
    <width>50%</width>
  </action>
</keybind>
<keybind key="W-Right">        # HalfRightScreen
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <x>-0</x><y>0</y>
    <height>97%</height>
    <width>50%</width>
  </action>
</keybind>
<keybind key="W-Up">        # HalfUpperScreen
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <x>0</x><y>0</y>
    <width>100%</width>
    <height>50%</height>
    </action>
</keybind>
<keybind key="W-Down">        # HalfLowerScreen
  <action name="UnmaximizeFull"/>
  <action name="MoveResizeTo">
    <x>0</x><y>-0</y>
    <width>100%</width>
    <height>50%</height>
    </action>
</keybind></code></pre>

find: https://www.ertecho.gr/radio/trito/ <- View Page Source

stream: https://radiostreaming.ert.gr/ert-trito

play:

mpv https://radiostreaming.ert.gr/ert-trito

alias:

touch trito
echo '!#/bin/bash' >> trito
echo 'kdocker mpv --player-operation-mode=pseudo-gui https://radiostreaming.ert.gr/ert-trito' >> trito
sudo chmod +x trito
sudo mv trito /usr/bin