For some reason, I do not know if it happened when i upgraded to Zune 4.00 on Windows, or after i migrated the OS onto a new motherboard (thus new onboard audio chipset) yesterday, but I just noticed the volume bar is completely not working. Yes i do not use the Zune program on Windows that often.
The volume bar can be adjusted or even muted but the Zune program continues to play the audio clips/podcasts based on the main Windows volume setting.
As far as i have tested, Winamp, Windows Media Player, other software with independent volume controls work normally. Only Zune appears to have this problem.
Anybody know how Zune program directs sound to Windows?