In FL u can set the amount of steps u want the file 2 play for.. the pitch/ sound will b a bit munched but generally does the trick 4 most stuff!

On the cahnnel settings there is a small window called FIT..!

Also U can click on the sound u want 2 work on then on on top of the window , next 2 the shuffle slider u got a simbol with some bars (next 2 the keys symbol), click it and choose shift, that's how u make a certain sound slightly of tempo at it maximum u'll "delay" the note event exactly 1 step..

Z