Is it audition for a rock band, a pit orchestra, for a music scholarship, etc?
If it's for a band - I assume they play songs. Find out in advance what songs, if they are cover songs, learn the songs. If they are original songs, get a feel for the style and play in that style.
Normally, bands don't care how great you solo or if you can do blazing paradiddles - they want someone who can play a grovve, in time and hopefully someone who is not an asshole. If you can do that, you are as qualified as the next guy.
If the auditon requires reading - well, then you better have reading chops.