trying to make slot machine sound in tweakbench.. please help!!

[aghori]

Hello,

I'm trying to make a sound for a college project, it is really important. Would appreciate help!!

This is the reference sound -
http://www.freesound.org/samplesViewSingle.php?id=69689

Also i need to do a version for mobile phone as well in midi. marimba, xylophone sound great but they dont sound "classic slot". Any pointers for midi production of this sound would also be very helpful.

Thanks!!
aghori