Finally and after some researches I managed to find the right way to have TS3overlay which was "removed" and replaced by TS3Overwolf. Anyways, until Overwolf is released for SA:MP (read this to vote making it support SA:MP) I'm going to show those who use teamspeak and want to see who talks whenever how to enable it.
Download this (TS3 3.0.13) : http://ftp.4players.de/pub/hosted/ts3/r ... 3.0.13.exe
Then download this (TS3 Overlay): http://ts3overlay.r-dev.de/download/ts3 ... ts3_plugin
After downloading them install them consecutively and you should have it working!
Proof it works for me:
Spoiler
Cruz's Guide: viewtopic.php?f=12&t=32684
enJoy
IMPORTANT: Updating your TS3 Client version will result in TS3Overlay not working!If any problems, post here.
Guide by Aleya.