Thank you so much for your quick reply!
Unfortunately it doesn´t solve the problem...
I´m on BiaB 2025

If I hit the PLAY-buttom (triangle) in the BiaB PlugIn it plays the song with sound. If I start the song in CUBASE it starts BiaB PlugIn as well and the highlighted bars in BiaB are in perfect Sync with Cubase ... but w/o any sound. Cubase is set to ASIO (UAD Apollo) and Biab to MME.
Any other ideas?

Michael