How to force Swisslog use PC soundcard?

[JW6VDA]

I had a shock last night, and thougt my IC7300 had broken. The symptom was that on a tx period in FT8, all of a sudden the tx transmitted something else than the Gaussian carrier from WSJT-X, and the tx power went down to nil. 

Looking it into it this morning, I found that the sound DX announcements from Swisslog was spoken on the built in sound card in IC7300 (USB codec)instead of the standard sound card in the PC. I just installed the sound announcement yesterday, so that is the reason this has never happened before. I cannot find a setting in Swisslog to force the use of the PC soundcard instead of the USB codec. Is there such a setting?

73 de Tom OH6VDA