Here's what Jane's Addiction had to say about their private FREE show at SXSW on their website
Jane's Addiction made arrangements for a number of their fans to be able to attend a special private show for FREE on Thursday, March 19 in Austin, Texas. Space is limited; These tickets are awarded first-come first-serve until allotment is exhausted and no guests are allowed (one  ticket per winner). 21 AND UP ONLY. Government-issued ID will be required for entrance. Please make sure you are signed up to JanesAddiction.com with your full legal name. We will notify all winners by Tuesday. If you can be there, please read the following disclaimer and instructions:
DISCLAIMER: BY ENTERING TO WIN TICKETS TO THIS PRIVATE SHOW, YOU UNDERSTAND THAT YOU ARE NOT GUARANTEED A TICKET TO THIS SHOW AND MANAGEMENT RESERVES THE RIGHT TO REFUSE TICKETS AT THEIR DISCRETION.
If you agree, please follow these instructions:
1) Log-in to your account on www.JanesAddiction.com (if you don't have one, click here to register)HERE to go to the private show page
3) Click "I'm Going" to be entered for a chance to win. Again, clicking "I'm Going" does NOT guarantee you a ticket.
NOTE: If you cannot be in Austin on March 19 or are not 21+, please do not sign up.