Hi DQ,

Welcome to BIAB 2009! Something is certainly not working for you. I take it that all is good with MIDI and it's only the RealTracks and -Drums that are the problem. Where I'd start with this problem is to look under Audio on the upper menu and choose Audio Driver/Settings. Set the Driver type to MME. See how that goes. It might be that you have selected ASIO and it's not working properly.

In relation to VSC, this is an older version of what is now known as VSC/DXi. It's the DXi version that is better on XP.

Hope this helps,
Noel