I have another addition... A time of day column.
If I create a playlist it would be nice to be able to add a column to the playlist grid that displays the actual time of day each song in the playlist will be played whenever and wherever the playlist is started (or stopped and restarted). I do DJ work using MM and sometimes I have a certain time of day that something else needs to happen like the band will be off break, I need to play a birthday dance at 10:05, somebody needs me to step away for 10 minutes, I gotta go collect money at the door, somebody wants to dance with me, etc.
If I have a running actual time of day column in my current playlist then I could more easily plan how many songs to drop into the list and know an exact time I can go off "auto pilot" and need to run back to the board using my wrist watch. This will enable me to leave my post and know certain timings in case I am juggling multiple tasks. Intervals and total play time are nice, but when I step away all I have is my watch and I want my playlist to simply tell me what time of day a song will be ending and I should be walking back, or what time of day it will be when these x number of songs songs finish, etc..
This enhance ment is NOT asking for intervals or total time display column. But rather an actual time of day column in the playlist that resets itself whenever I press "Play". You can already add the number column "#" to the playlist, this would be a way of "numbering" the playlist entries by time of day instead of just an integer.