When I import a sample, the said note is completely different from the actual note. For example, when I put in the note D-5, it sounds like A-4. How can I fix this?
hmm, the most easiest way should be using this, before you import:
http://www.analogx.com/contents/download/audio/autotune.htm
it has nice and simple interface. Or if you imported your samples already, you can always export, "fix" them to desired note, and import them again to tracker.
On the sampletab, theres a control that allows you to set a note. Change this and play the note until you have a match. If you don't get it right (like its a bit off-tone) use the finetune settings to change it until it matches perfectly. If you tune it against another sample, make sure it resonates which means you're close, and at a certain point, it will stop resonating. Thats the exact center.