M audio Fast Track with Audacity or other interface?

Please do not shout in UPPER CASE. Try monitoring in the headphones jack of the UR22, set the playback device in Audacity’s Device Toolbar to UR22, and turn off Transport > Software Playthrough at the top of Audacity.

That might be something to do with it, if the crackles are in different places each time. Does it sound OK played in headphones?

Or did you record too loud? If you see red vertical lines when you enable View > Show Clipping in Audacity. you did record too loud.

And if not too loud but the crackles are in the same place each time, even in headphones, then you have a recording problem. This is often a sample rate mismatch. See FAQ:Recording - Troubleshooting - Audacity Manual (the main part to interest you is two paragraphs down).


Gale