As the title say I'm not hearing the Pilot Voices. When I press the hotkey for clearance I can read the the text in the FSUIPC Window but hear no voices although I've selected one before in PFE Options. Then after 5-10 seconds I can hear the Controller who gives me the clearance with sound. There's only the pilot without sound. So I had a look at your FAQ Section and found that the Game Commander must be deactivated. So I looked in the Hotkey section of PFE and the Game Commander Hotkey was already deactivated. Next I had a look at the logfile and there I found that error:
Transcript: 'Clearance Austrian 2105 at gate 42 IFR to Lima Oscar Whiskey Whiskey with information November '
01.09.2015 18:40:44: 800 - FS Screen : Clearance Austrian 2105 at gate 42 IFR to Lima Oscar Whiskey Whiskey with information November
01.09.2015 18:40:45: 990 - Error in NET SaySentence: Fehler in der Anwendung.
I have installed PFE 2.15 on Windows 7 in the directory: C:\FS Addons\PFE\.
(FSUIPC 3.99z8)
It may be important to mention that it isn't now activated. Before activating I wanted to test if everything works but it doesn't work up to now. So I decided to contact the Support to find a solution before activating.