virtualbox.org

I switched my MIDI Out device on my Virtual Box running XP to CoolSoft, and 3D Movie Maker didn't open. When I switched it back to GS Wavetable, it did. Same thing with BassMIDI, and I noticed even Windows Media Player wouldn't open my MIDIs. Please help!

You're confusing this with a CoolSoft or BassMIDI support forum... if you installed those, you already know more about the topic than 99.99% of VirtualBox users.