Have I missed a 'Restore BGII Music' file or something?
Apart from the music, the gameplay for this install is absolutely seamless so far and kudos to all the mod-makers involved and those putting together the Big World Project.
Apologies if i have missed something crucial in this install!! Any help much appreciated!

Here's the log file:
// Log of Currently Installed WeiDU Mods
// The top of the file is the 'oldest' mod
// ~TP2_File~ #language_number #component_number // [Subcomponent Name -> ] Component Name [ : Version]
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #0 // BG2 Fixpack - Core Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #1 // BG2 Fixpack - Game Text Update: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #3 // BETA Core Fixes (please check the readme!): 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #100 // Party Gets XP for Sending Keldorn to Reconcile With Maria: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #101 // Improved Spell Animations: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #102 // Cromwell's Forging Actually Takes a Day: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #103 // Mixed-Use Dagger Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #104 // Ghreyfain's Holy Symbol Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #106 // Giants Receive Penalties When Attacking Halflings, Dwarves, and Gnomes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #107 // Remove Dual-Classing Restriction from Archers and Stalkers: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #108 // Remove Second Attribute Bonus for Evil Path in Wrath Hell Trial: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #109 // Corrected Summoned Demon Behavior: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #110 // Additional Script Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #111 // Bard Song Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #112 // Wizard Slayers Cause Miscast Magic on Ranged Attacks: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #113 // Additional Alignment Fixes: 6.1
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #114 // Change Free Action to Protect Against Stun: 6.1
~SETUP-BDTOBV166.TP2~ #0 #3 // IMPROVED COPPER CORONET: BWP v6 Fix
~SETUP-BDTOBV166.TP2~ #0 #4 // RESTORED DAK'KON'S BLADE: BWP v6 Fix
~SETUP-BDTOBV166.TP2~ #0 #5 // Improved Nymph (Woodland Being) Script by Goeran Rimen: BWP v6 Fix
~SETUP-BDTOBV166.TP2~ #0 #7 // Baldurdash Fix Pack for ToB, v1.66 WeiDU - BG2Fixpack adjustment: BWP v6 Fix
~SETUP-TDD.TP2~ #0 #0 // The Darkest Day, v1.12
~SETUP-SOS.TP2~ #0 #0 // Shadows Over Soubar, v1.12
~SETUP-CTB.TP2~ #0 #0 // Check The Bodies, v1.9
~SETUP-CTB-CHORES.TP2~ #0 #0 // Candlekeep Chores, v2.1
~SETUP-CTB_FF.TP2~ #0 #0 // Check the Bodies Fast Forward, v1.1 (for CtB v1.8 or later)
~SETUP-TS-BP.TP2~ #0 #0 // TORTURED SOULS v6.10 (BP Compatible Version)
~SETUP-ROT.TP2~ #0 #0 // Region Of Terror, v2.1
~SETUP-BGT.TP2~ #0 #0 // Baldur's Gate Trilogy - Core: 1.07 WIP-08-09-28
~TXTMUSIC/TXTMUSIC.TP2~ #0 #0 // Restored Textscreen Music for BG1TuTu, EasyTutu, and BGT-WeiDU
~SETUP-DSOTSC.TP2~ #0 #0 // DSotSC for BGT-Weidu v2.05 Mod: v205
~SETUP-DSOTSC.TP2~ #0 #100 // Dark Side Interparty Banter: v205
~SETUP-DSOTSC.TP2~ #0 #200 // Extended NPC Soundsets -> Additions only: v205
~SETUP-NTOTSC.TP2~ #0 #0 // NTotSC for BGT-Weidu v1.60 Mod
~SETUP-NTOTSCV162.TP2~ #0 #0 // Fix NTotSC Issues v1.62
~SETUP-BONEHILL.TP2~ #0 #0 // Bone Hill Mod v2.31 (Requires BGT-Weidu or Tutu)
~SETUP-BONEHILLV235.TP2~ #0 #0 // Bone Hill Mod v2.35 upgrade (Requires BGT-WeiDU or Tutu)
~SETUP-TGC1E.TP2~ #0 #0 // The Grey Clan Episode One: In Candlelight, BGT-WeiDU edition v1.2
~SETUP-SIRINESCALL.TP2~ #0 #0 // The Lure of the Sirine's Call: v8
~BG1UB/SETUP-BG1UB.TP2~ #0 #0 // Ice Island Level Two Restoration: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #1 // The Mysterious Vial: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #2 // Additional Elminster Encounter: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #8 // Safana the Flirt: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #9 // Appropriate Albert and Rufie Reward: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #10 // Place Entar Silvershield in His Home: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #15 // Flaming Fist Mercenary Reinforcements: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #19 // Minor Dialogue Restorations: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #20 // Audio Restorations: BWP v6 Fix
~BG1UB/SETUP-BG1UB.TP2~ #0 #24 // Permanent Corpses: BWP v6 Fix
~SETUP-HALFENFIX.TP2~ #1 #0 // Halfen Fix
~SETUP-UNDERREP.TP2~ #0 #0 // Underrepresented Items From Icewind Dale 2
~SETUP-SAERILETH.TP2~ #0 #0 // Saerileth Romance Mod v12 (BG2:SoA & TOB NPC) created by nethrin and Sillara
~SETUP-VALEN.TP2~ #0 #0 // Valen
~SETUP-YASRAENA.TP2~ #0 #0 // Yasraena v7 (BG2:SoA & TOB NPC) created by nethrin & Sillara of the Tamari
~SETUP-HUBELPOT.TP2~ #0 #0 // SConrad's IM6-entry: Hubelpot Thistledown, the Vegetable Merchant NPC-mod: BWP v6 Fix
~SETUP-HUBELPOT.TP2~ #0 #1 // Hubelpot's Kit -> Default kit, the Totemic Druid: BWP v6 Fix
~SETUP-UB.TP2~ #0 #0 // The Kidnapping of Boo by Cliffette
~SETUP-UB.TP2~ #0 #2 // Kalah and What He Was Promised
~SETUP-UB.TP2~ #0 #3 // "Cat and Mouse" (Bodhi hunts you in Spellhold) by Ghreyfain
~SETUP-UB.TP2~ #0 #4 // Gorje Hilldark and the Extended Illithium Quest
~SETUP-UB.TP2~ #0 #5 // The Pai'Na/Spider's Bane Quest
~SETUP-UB.TP2~ #0 #6 // Restored Crooked Crane Inn
~SETUP-UB.TP2~ #0 #7 // Restored Encounters
~SETUP-UB.TP2~ #0 #8 // Artemis Entreri in Bodhi's Lair
~SETUP-UB.TP2~ #0 #9 // Corrected "Xzar's Creations"
~SETUP-UB.TP2~ #0 #10 // Restored Hell Minions, by SimDing0
~SETUP-UB.TP2~ #0 #11 // Gorf the Squisher Fix, by Gebhard Blucher
~SETUP-UB.TP2~ #0 #12 // Item Restorations
~SETUP-UB.TP2~ #0 #15 // NPC Portrait Restorations
~SETUP-UB.TP2~ #0 #16 // Corrected BAMs and Scripts
~SETUP-UB.TP2~ #0 #17 // Corrected Character Names and Biographies
~SETUP-UB.TP2~ #0 #19 // Restored Bhaalspawn Powers, by David Gaider
~SETUP-UB.TP2~ #0 #20 // Extended ToB Item Descriptions
~SETUP-UB.TP2~ #0 #21 // Throne of Bhaal Minor Restorations
~SETUP-UB.TP2~ #0 #24 // Sarevok's Remorse
~SETUP-RES_FIXER.TP2~ #0 #0 // Resource Fixer: v1
~TOD/SETUP-TOD.TP2~ #0 #0 // Tower Of Deception Mod (Requires Throne Of Bhaal)
~TOD/SETUP-TOD.TP2~ #0 #1 // Improved Astral Shard Guardian
~TOD/SETUP-TOD.TP2~ #0 #2 // Encounter with Ustrain
~SETUP-BP-BALANCER.TP2~ #0 #3 // XP for Spell Learning -> At 4% from your current configuration
~SETUP-BP-BALANCER.TP2~ #0 #8 // XP for Disarming Traps -> At 4% from your current configuration
~SETUP-BP-BALANCER.TP2~ #0 #13 // XP for Pick Pocket -> At 4% from your current configuration
~SETUP-BP-BALANCER.TP2~ #0 #16 // Installing files needed for the components of the group "Balancing XP and items of several mods"
~SETUP-BP-BALANCER.TP2~ #0 #18 // Restore original BG1 creatures' XP and items -> Also remove SOME (partly random) overpowered custom items from other Mods
~SETUP-BP-BALANCER.TP2~ #0 #21 // Item and XP Balancing for 'Dark Side of the Sword Coast (v2.00)' -> Also randomly remove SOME overpowered custom items (will not affect quest relevanted items)
~SETUP-BP-BALANCER.TP2~ #0 #24 // Item and XP Balancing for 'Northern Tales of the Sword Coast (v1.60/1.61)' -> Also randomly remove SOME overpowered custom items (will not affect quest relevanted items)
~SETUP-BP-BALANCER.TP2~ #0 #27 // Item and XP Balancing for 'Secret of Bone Hill (v2.10)' -> Also randomly remove SOME overpowered custom items (will not affect quest relevanted items)
~SETUP-END_BIFF.TP2~ #0 #1 // Override Biffing -> This method biffs all files in the override folder and it's not possible to uninstall it.
// Recently Uninstalled: ~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #0 // Worldmap for Baldur's Gate v7.0 - including colored Baldur's Gate map icons -> New Worldmap for use with Mega Modification...
// Recently Uninstalled: ~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #2 // Worldmap for Throne of Bhall -> Use new Worldmap for Throne of Bhaal as well
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #0 // Worldmap for Baldur's Gate v7.0 - including colored Baldur's Gate map icons -> New Worldmap for use with Mega Modification...
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #2 // Worldmap for Throne of Bhall -> Use new Worldmap for Throne of Bhaal as well
~SETUP-SCSII_WM_FIX.TP2~ #0 #0 // SCSII_WK + BP-BGT_Worldmap Fix
~SETUP-BGTMUSIC.TP2~ #0 #0 // Baldur's Gate Trilogy - Music -> Full Baldur's Gate and Tales of the Sword Coast Music