I don't know TUNE very well but I think your options are:
1. Get a new freehub body with Shimano splines.
or
2. If you're running an all otherwise all Shimano drivetrain and want to use
a Campagnolo freehub/cassette, use Jtek Shiftmate:
If you also have 9 speed Shimano STI, 9 speed Shimano Der,
and 9 speed Campagnolo cassette, use Shiftmate #1.
If you aren't doing that, study the webpage for compatibility.
http://jtekengineering.com/shiftmate.htm
They have almost every combination covered.