I don't know if that is a bug or not but I notice the sound of my main character is not the same level as the others members of my party. Why ?
I don't know about the English one, but in the German versions, BG1 sounds were considerably louder than those of BG2. As the main character's voice comes from the BG2 selection, but the NPCs use BG1 resources, I guess you're experiencing similar behaviour.
PS: What does it mean "Fix THAC0 table problems, etc" (http://www.gibberlings3.net/tutu/index.html) :
Un-Nerfed THAC0 Table, Saving Throws, Grand-Mastery, and Arcane, Divine Spell Progression (Courtesy of Weimer's BG2 Ease-of-Use)
From Blucher, this component follows AD&D wizard and cleric spell progression more closely, fixes some saving throw and THAC0 table problems, etc.
Someone can explain me in details please why to fix the THACO ?
Thanks.
In AD&D, on which the BG rules are based, you have tables of how THAC0, Spells etc. are progressing with raising levels. For BG, they chose to alter that tables slightly, and this component tries to re-introduce the AD&D tables (as much as possible). From the wording ("un-nerfed"), I guess that you'll be progressing faster.