How to change audio source in linux (KDE Plasma)?

yes, finally its working now thank you for bearing with me :smiley:
omg finally :smiley:

THIS IS THE SOLUTION

[Jack Front Headphone]
required-any = any
state.plugged = yes
state.unplugged = unknown

i now have a drop down menu in the widget to switch to headphones. so basically i needed to change the element front switch to off and then change this jack front headphone to this.