The latest update of Flash Player breaks the 'speaker fill/sound enchancement' feature of Windows. i.e whenever I play some online videos only 2 of 6 speakers will output sound. Previously all 6 (1 Subwoofer + 5 speakers) used to play audio. I can confirm the issue with both Chrome & Firefox (I was using an older build of Flash Player 11.x in Firefox so the Audio was fine but when I upgraded to 11.3.x the compatibility was broken). So how am I supposed to fix this issue?
It's not a software/driver error btw as everything else works fine, audio from Media Player or any other sound application will play on all speakers.
In short worlds: This newer version of Flash player just 'bypasses' the 'System Effects/Speaker Fill/Sound Enchancements' of Windows. It just plays the audio directly but on only 2 Speakers since my System requires these 'System Effects/Speaker Fill/Sound Enchancements' to ouput sound on all speakers. So why did adobe change this?
I am also having this exact same problem and it is infuriating. And I am not seeing a quick download links to the previous version unless it was the last major version change and I don't want to go back that far. I am using a Creative Titanium X-fi PCI-e sound card with a Sandybridge chipset (2700k). My sound works fine in anything that isn't flash and I have also tested in multiple browsers.
I did just find a version of 11.2 on another website and installed it and fixed the issue. The sound quality is also much better. With the new version I can have my speakers manually mirror the stereo sound (which is a pain) but the bass and trebble sounded way off when it was going through flash directly. Definitely avoiding any flash updates for a long while now.