If you just want to mix MP3s at home and don't have a specific hardware requirement, It is free, works perfectly on Windows 10/11, and supports modern controllers.
Open the software. You will see a timer in the top right. Every 20 minutes, the audio will fade out. Simply restart Virtual DJ to get another 20 minutes. To remove the timer, you need a Pro license (paid). virtual dj 7 free download old version 32 bit