You can put a script action Keyboard / GPI Mapping and keybind that to something like "ctrl+1"
'Then place this script in there, 0 will clear Channel 1, 1 will clear channel 2.
dim SC as xpServerChannel
Engine.GetServerChannel(0, SC)
sc.Eject()
'this script will remove the clip from the preview on the server channel.
dim SC as xpServerChannel
Engine.GetServerChannel(0, SC)
sc.EjectPreview()
#XPression