How Can I Hear Effects During Recording?
Some sound cards or USB devices have a way to monitor the live recording independent of Mixcraft.  However, if you'd like to hear the effects during recording, you'll need to disable the sound device's monitoring and use Mixcraft's monitoring system.  For example, if you are making a weird recording of your voice and would like to hear the echo or delay while recording, you'll need to turn on monitoring.  You'll need to enable Mixcraft's monitoring and disable any sound card's built in monitoring.

To turn on Mixcraft's monitoring, click the Monitor Incoming Audio option on the armed track.  Note that you may be fighting latency versus non-gapping audio by enabling monitoring.

To turn off the sound card's built in monitoring, you may need to go into the Window's audio mixer and go the playback section and click the advanced button (if it's there) to disable it.