Good news everyone. Please check out this post on the Windows 10 developer forum.
It seems Win 10 build 10166 addresses some of the audio driver problems experienced in the last few builds. Microsoft needs some help testing various hardware scenarios so now is a good time to pitch in an make a difference on the operating system everybody will be using soon. We are testing DPS in this build now and will report our findings.
PS: sorry about the login trouble with DPS Insider. I am addressing that now.