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)