Mixcraft supports three burning engines: Primo, Goldenhawk and IMAPI.
The Primo burning engine is preferred because it's the newest and it supports the latest CD/DVD drives. It was introduced in Mixcraft version 4.5.
If the Primo burning option is not working correctly, you can try the older Goldenhawk burning engine.
If Goldenhawk does not immediately recognize your CD/DVD drive, try the "Goldenhawk Drive Override" option:
Go into the CD Burning Preferences, make sure that Goldenhawk is selected and then click the Goldenhawk Drive Override... button.
This brings up some options for your unsupported devices.
Choose the unsupported drive from the drop down Select A Drive. First try the Use A Generic CD Writer Drive and then click OK. Restart the software to see if its supported by trying a test burn. If that doesn"t work, go back into the Goldenhawk Override dialog and try Use The Driver For This Drive Type option. Select a drive that sounds similar to your drive. Consult the web to find out what type of drive it could be cloned from. Try a drive with the same manufacturer but at a slower speed, etc. Note that it is not guaranteed to work, but this is an option to try.
Finally, if neither Primo or Goldenhawk is working, you can try Windows' own built-in IMAPI burning engine. The drawback to IMAPI is that it burns two second gaps between tracks on the burned CD.