there is a mobile phone ringtone site called 'zedge.com', its all free to download to your pc & all ya have to do is type in what kinda phone ya have & it comes up with loadsa results.
they have a **** loada good quality Pred sounds from all movies!
personally, i have made a simple sound board by uploadin loadsa these sounds to an 'ipod shuffle', which i have connected to some small but very loud 'nokia' speakers that i hide underneath my AVP armour!
because the shuffle come equipped with its own little belt clip, all you have to do is make a loop outta flat elastic (to the width of your palm), then you can control the sounds by pressing ya finger into ya palm.
it works very well & is very cheap to make...