Goes to show that I’ve never used Protracker, that was actually a neat way of displaying VU meters! 
Would definetly come in handy on say Milkytracker on a PDA, or for that sake Renoise with maximized patterns.
You never seen this Sagosen?
Man, I would LOVE to see VU meters like this in Renoise. I have made this suggestion a couple of times before in the past.