Hi, daniloco, and welcome to the DonationCoder site. 

In the last days a new version of AIMP (version 4) has been released.
As you might guess, MPH does'nt work with it 
This time the process name is simply AIMP.exe, no version number added to the name.
Could you please add it to the list of supported players?

Ask, and ye shall receive.    Cheers.

Website | Download
v1.1.3 - 2016-02-29
    + Added support for AIMP4 (http://www.aimp.ru). ; (Thanks, daniloco)

Hi, rehuh, and welcome to the DonationCoder forums. 

Is it possible to add MPC-BE to the list of supported players ?

Sure.  I only seem to be able to find the 64-bit version (which I have working in MPH).  Is there a 32-bit version?

Please give this a try:

Website | Download
v1.1.4 - 2016-12-20
    + Added support for Media Player Classic BE. (Thanks, rehuh)

Everything seems to be working good.
Thanks for adding it ! 

Good to hear and you're quite welcome.  I'm glad you find the program useful.

Hi, bkvamme, and welcome to the DonationCoder site.

Any chance of adding support for Plex Media Player? It has support for Media Keys, but needs the program to be in focus when pressing the buttons.

I'm pretty sure you're referring to the browser-based Plex Media Player, right?  If so, and in my experience, there really isn't a reliable way to control these types of players remotely the way that MPH works.  As an aside, I run a Plex server and love it's functionality. 

Hello,
thank you very much for this project, it's just great!

Would it be possible to add the pandora open source client Elpis ( https://github.com/adammhaile/Elpis ) to the list of the supported programs?
At the moment I'm somewhat able to control it trough MPH when spotify is opened paused in the backgroung but being able to control it in a proper way would be awesome.

Thank you very much and keep up the great work!