Okay, thanks to my tester and assistant Mateus_Rick, I created a quick patch for Messenger Plus! v3 and v4 so you guys can use Plus! sounds again.
For v3, you need to replace
C:\Program Files\MessengerPlus! 3 or
C:\Program Files (x86)\MessengerPlus! 3 with the file in this ZIP file: MsgPlusH.zip (870.5 KB)
For v4, @Mateus_Rick will share the DLL in a few minutes.
We quickly tested and everything should work.
We plan to implement the sound server on the Escargot server so maybe in a few days/weeks, you will have to change the DLL again. We will let you know if something like that happens.
Also, there is no website to download sound packs so if someone wants to make one