I have in the past. I'm not currently. If you are somehow worried that the combination of PC port + PowerLink to Aux would be problematic, it should not matter as the Active has no idea it is not talking to a BeoLab.
However, you have just reminded me of a new application for this PC port (connect my turntable so I can listen via BS1) so maybe I will set this up in a few days and let you know.
Stan