Sorry, I don’t have any ideas how to solve this problem at the moment. As on your old computer, there shouldn’t be a problem with other programs producing sound at the same time as Podum unless they’re all running on ASIO drivers.
What sort of programs are you talking about – music/video players, web browsers?
There is a setting in the preferences (“Engine” tab, set to “Release drivers when Podium does not have focus”), though I’m not sure this is what you’re looking for.