I am using the latest versions of Audacity and Source Connect on a PC using Windows 10. I have a Scarlett Solo plugged into the PC via USB. It all works beautifully with Audacity and Source Connect when used separately. If I try using them together, Audacity stops working and gives me the error code -9999 / something about “error opening recording device”. It feels like Source Connect is taking control of the Audio Driver and won’t allow other software to use it simultaneously. I believe this isn’t the case on Mac.
What are the biggest challenges with Windows and Source-Connect?
Most Windows issues stems from your audio hardware not wanting to share itself between 2 applications. This is a core problem with ASIO support on Windows that cannot be addressed by us so we can only recommend workarounds.
If you find that you cannot use both Source-Connect and your recording software at the same time, this limits your ability to make a “backup” recording, or otherwise use your usual DAW at the same time. Source-Connect 3.8 includes a VST and AAX/RTAS plug-in to help with this, with known supported applications listed here. Please read below for current issues and suggestions.
It doesn’t look like Source Connect is compatible with Audacity.