DJ using just the Mouse and software.
You can mix without a controller..
I watch a video somewhere of someone using DJ software and mixing with just the mouse and thought, that looks like fun and gave it a go.
The software I used was Rekordbox and a few tunes from Ministry of Sound.
YouTube - DJ Software in the mix
For a simple setup mix. I didn't really notice any downside in using just the mouse. I do own a few DJ controllers and it makes using software simple and fast. But if all I had was a mouse, I can still do a decent job and keep a party going all night.
It just doesn't look cool, dose it!
Enjoy the vid and the tunes.