Wow lot's of reply's haha. I'll try and answer as well as possible
MFN & SFA 12" Versions: I believe these are just the CD Versions, correct me if I'm wrong and there is a difference in mix.
Why Worry (Outro Part): It's listed
The official name is "Instrumental Segment"
Your Latest Trick: You're sure it isn't the LP version? Would be a cool addition if not!
Two Young Lovers: Will be taken for the next update. Must be a remixed version with fade-in and fade-out. Thank!
Btw. I've got no idea if that single is rare, sorry
The Long Highway; I didin't post that one as it was from the What It Is single, but if it's a DS track, I'll list it. It's the demo version I guess?
Expresso Love (Final Oz): Never officialy released, great version though
I Think I Love You Too Much (Live Knebworth): From an official CD, used with permission from Dire Straits' record company, so it's official, thanks!
Money For Nothing & Solid Rock (Live Knebworth): Can't find a CD where that's from, do you have a link / picture?
Money For Nothing (2x Live Prince's Trust): What CD are they from? Do you have a link / picture?
Rock 'n Roll: That's a solo track, so not listed here
Money For Nothing (Compilation): All tracks that are different are listed
I can think of Portobello Belle, WDYTYG?, Money For Nothing, Twisting By The Pool, Telegraph Road and Brothers In Arms right now
OFFICIAL RELEASE: under own management (studio / live / compilation) or when a CD notes "Mark Knopfler / Dire Straits appear(s) in courtesy of [record label]" or when it's a demo