Figured out how to get the tool popup using AutoHotKey.
THIS post will explain how to install it.
Here's the script.
;
; Short-cut: CTRL+T
; Quick RMB Tool Context menu
; If you want this to fire up a tool in mp3Tag, then rename
; the tool to have an ampersands in the name to represent the last button pressed.
; e.g. '&Youtube Search' (see {y} below)
;
#IfWinActive ahk_exe Mp3tag.exe
^t::
Sleep, 500
SendInput {control down}{shift down}{f10 down}
SendInput {control up}{shift up}{f10 up}
send, {t}
; Line below is optional. Here you can fire up the tool using the letter represented by the & in the tool name.
; send, {y}
Return
#IfWinActive