I've got this as well, but I'm using longer (3-4 minute 44.1khz 16bit) samples - this'd be useful to be fixed for a project I'm currently doing....
I've imported the samples over FTP into a folder I created and as soon as I click on them for preview Jasuto does a hard crash...

They're 33 and 41MB, so pretty big, but I tried them in mono and had the same crash - any idea's Hemi?