skellytz

Yes, some tracks will be different depending on what was available on the BG2 OST.

As instructed at the end of the WeiDU installation:

Due to compatibility issues this installer does NOT automatically copy the music files to your BG music/ folder. You will have to manually copy the files (be sure to keep a backup of the original content).

So after running the installer, copy the 1pp_hq_music_II\music folder to your main game directory, overwriting the vanilla files. The included converter is only for music files from other mods.

The main component adds random items through scripts given to creatures. For example, agrandbr.bcs gives the creature agberr01.itm (gooseberries). The code can be found in t-random.tpa (Sam's repo with the original version; Austin hasn't made his available on GitHub). Aurora's Shoes and Boots adds one of its agrandxx.bcs creature scripts at random.

Have you tested if this happens without Aurora's installed?

Despite what the download page description says, TDD isn't required.
 
AjocMod Readme:

The weidu version you have here is compatible with or without TDD.

Edit: Ajoc's Minimod is now available on GitHub and is being updated thanks to 11jo, aka JohnBob! I've also updated the download page link and description.

Some download links may seem broken after the forums switched to HTTPS. Depending on your browser, you may have to additionally approve the downloads that can't be properly validated for a secure connection. These links work for me on Firefox, with a security warning.

I've been moving all downloads to GitHub; most of our official mods are already there. You'll find Enkida's, Ilmatar's, and wonnimchunha's portraits on the Index of Mods, which is going to replace the legacy download center in the future. I've also updated the download links on their forum pages for your convenience.

The other mod you've reported, Ajoc's Minimod, isn't officially on GitHub yet, but I'm going to add all Mod Resurrections soon. Its direct download link can get blocked by your browser or trigger a security warning. For now, you can get it from the IEGMC mirror. Ajoc's Minimod is now available on GitHub.