Mixer

If your computer is too slow to play with proper speed remember that the new Float Mixer is the default device used by OPENCP when dealing with software mixing. If you enable the Normal Mixer you will gain a good speed up of your system.

Look in the [sound] section of your cp.ini file for the following line:
wavetabledevices=devwMixF devwMixQ (...) devwMix devwNone
The leftmost device is used as default. So change the line to the following to enable the Normal Mixer:
wavetabledevices=devwMix devwMixF (...) devwNone

If you don't understand all this right now, read chapter 5 on how to configure OPENCP.