Scratching with your right mouse button enables you to scratch and keep in time. Right-click scratching utilizes catch-up functionality, which means that once the scratching has completed the virtual record will catch up to the would-be playing position, had you not performed the scratch, therefore keeping you in perfect time with the music.
Select a track that you want to scratch on a turntable.
Hover over the virtual record with the mouse.
Right-click on the virtual record, scratch back and forth at any speed, and when you release the mouse button OtsTurntables will catch up to the would-be playing position.
How to scratch a file
How to record a scratch sample