I don't play live anymore, but have in the past.

Use MP3's or Waves in a laptop or some other player that allows you to set up play lists or select the next tune easily.

The less mission critical gear you have running that requires drivers and an operating system the better off you are. Trust me on that one.

If fact, ideally, you would want 2 laptops. One running the music for the show and the other one booted, plugged in and on standby, unless you're willing to CYA while the crashed lappy reboots.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.