Just found out that the slowed down middle section in the "Southampton" film edit with the percussion at the beginning is indeed taken from the "Trailer" track. My mistake.
That being said, I too have created an album of the film mixes for my iPhone. And I even edited them such that they are a more enjoyable listening experience than the butchered edits in the final film. Below are the tracks I created for my album in the order based on the music heard in particular scenes.
1. Opening Titles, 2 1/2 Miles Down - recreated the "Violin Tool Kit" and "Wild Piano" cues myself, recreated the synth string cue heard right before the thumping bass line in "2 1/2 Miles Down (Alternate)" towards the end, used the synth choir from "A Promise Kept" OST version where "Drone and Chord" was placed in the final film edit, crossfades into "To The Keldysh" at the end
2. Rose Revealed - clean ending
3. Distant Memories - a couple of cuts, first section repeats
4. My Drawing, Relics & Treasures - crossfaded "My Drawing" into "Butterfly Comb"
5. Southampton - only has like three cuts, left in the entire middle section, didn't crossfade "Southampton (Alternate)" into the aforementioned "Trailer", but instead I added in chimes from "Leaving Port (Alternate)",
6. The Winning Ticket - edited "A Lucky Hand" from Heaven Help Us to closer match "Lovejoy Chases Jack"
7. Leaving Port
8. Take Her To Sea, Mr. Murdoch
9. First Sighting, Rose's Suicide Attempt - second part beginning with "2 1/2 Miles Down", crossfading into "Rose's Suicide", then into the OST version of "A Promise Kept"
10. Jack Saves Rose - cuts in a couple of places
11. The Heart of the Ocean - segue with "2 1/2 Miles Down", crossfades into "Rose's Suicide" with former overlapping near the end
12. The Promenade - just 40 seconds of that track
13. Rose - the entire "Rose (Alternate)" track on the LLL release
14. Butterfly Comb - the entire Butterfly Comb track
15. The Portrait - the first minute and 45 seconds of Horner's demo
16. Lovejoy Chases Jack and Rose - second part is material from Heaven Help Us
17. Lovemaking - second part I got from another fan-made edit that was ripped from the film, the ending of "Rose" with the flute pitched up an octave with sound effects dialed out
18. Hard To Starboard - few cuts, overlapped with "Hard To Starboard (Alternate)" in places, used a similar whooshing sound effect to the the one heard when the iceberg is spotted
19. Rose Frees Jack - combined all the music heard in this sequence of the film into one track, included the first piano entrance from "Rose's Suicide" toward the end (as Rose breaks Jack's handcuffs with an axe), briefly crossfades back into "2 1/2 Miles Down" for the clean ending
20. A Building Panic - crossfaded "Intro To Building Panic" into "Trapped on 'D' Deck" and then into "Hard To Starboard" with the "Al Bathra" cue from Courage Under Fire overlapping it, created a clean ending by looping the last chord in "Intro To Building Panic"
21. Women and Children First - crossfaded the intro to "Trapped on 'D' Deck" into "A Building Panic", "Rose's Suicide" repeating at the end
22. Unable To Stay, Unwilling To Leave - used jointy95's edit where he dialed out the dialogue
23. Trapped on 'D' Deck - crossfaded the middle part into "Hard To Starboard", then into "Trapped on 'D' Deck - Ending"
24. The Sinking, Death of Titanic - used "A Building Panic (Album Suite)" for when the big choral theme returned because I think the whooshing sound effects work
25. A Promise Kept - recreated the missing synth choir overlapping the low brass in the first half, used Michael Stearns' "The Beacon" in the second half
26. A Life So Changed
27. A Woman's Heart is a Deep Ocean of Secrets
28. An Ocean of Memories - used the string cue from "Relics & Treasures" for when "Rose (Alternate)" crossfades into "Unable To Stay, Unwilling to Leave", used flute ending from jointy95's edit
29. My Heart Will Go On - no cuts
30. Post - used the synth choir from "A Promise Kept" OST version to bridge second half of "Take Her To Sea, Mr. Murdoch" film version with the closing to "Hymn To The Sea"