Hello All,
I'm looking for more in-depth information on the internal FSX sound system to solve my challenge with it.

What happened ?
1. After first out-of-the-dvd-box FSX installation everything worked as it should be
- Theme Music played during FSX start-up
- I could hear Aircraft sounds during Free Flight
And i was happy

2 - I completely de installed FSX with its own de-installation program (via the Windows Control Panel)
3 - I erased the C:\program files\microsoft games\fsx... folder structure from my hard-disk
4 - I applied CCleaner, Power Tools Lite and Wise Registry cleaners (to clean op the garbage from the FSX de-installation)
5 - I reinstalled FSX for the second time:
--> I had to reactivate it again, which did not go well right away due to "internet connectivity problems".
--> I had to do this multiple times, before it finally worked

6 - I reinstalled FSX Acceleration Pack for the second time:
--> I had to reactivate it again, which did not go well right away due to "internet connectivity problems".
--> i had to do this multiple times, before it finally worked
And since then, no-fsx-related-sound at all :-(

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What have I done so far? (see the link below to FSX settings slideshow)
http://www.flickr.com/photos/indigowarrior9/sets/72157651052423702/
==============================================================================

A - Tested my RealTek onboard soundchip/card via its build-in software settings menu.
-> Everything works great.

B - Killed the Windows 7 Voice Call Volume reduction bug,
-> by setting it to "do not take any action"

C - Tested Soundplaying on the Windows Operating System level
-> Went ok, all sounds played well.

D - Tested Soundplaying of the Windows Application level
-> Played mp3 with Winamp - Ok!
-> Watched .flv and .mp4 video's with VLC - Ok!
-> Watch online Youtube videos via FireFox - Ok!

E - Surfed the internet to gather EVERY! sound related parameter inside FSX.CFG
- Did not result in any FSX-sounds by tweaking the fsx.cfg file

F - Searched the FSX /ESP SDK documents
- Came up empty on that issue

G - Tested various sound-setting via the FSX-menus
- Did not result in FSX producing any music_theme_sound or freeflight sounds

H - During FreeFlight-mode, toggle the sound on/off function
- Did not result in FSX producing any music_theme_sound or FreeFlight sounds (inside the cockpit and outside the aircraft)


So I must come to the conclusion that FSX has (more) hidden / undocumented:
- FSX.CFG parameter-value entries that control sound-creation
- Registry Settings that control her sound-creation process

==============================================================================
My QUESTIONS FOR YOU:
1 - Who has experienced similar WIN7, 64bit FSX sound challenges and how did you solve it?
2 - Is there a location on-line / book/ tutorial /graphic where I can learn more about the internal FSX soundsystem?
3 - Does FSX use Windows DirectX Layers for her sound creation or does it use its own, native sounds-driver?
4 - Does anyone has another hint,tips, trick, clue on how I can get FSX to produce sounds again?

Thanks in advance for sharing all your answers and insights!

PROBLEM SOLVED: (by "fsfox" on the fsdeveloper.com forum)

It was not an FSX setting, but a realtek Soundcard driver setting, which i did not have noticed before (ever) See the screenshot and explanation, why is was not able to find it earlier:
https://www.flickr.com/photos/indigo...9/16480133019/

Thanks everyone to helping me. Wishing you a nice weekend.

 

 

PROBLEM SOLVED

Glad you found the solution, and equally glad you posted it on the forum - I guarantee someone, sometime will have a similar problem.

Happy flying (and weekend)!

+1 and welcome to the forum.

 

Doug