Tone of samples

[Valadia]

In order of keeping everything in key, all samples etc. must be on the same tone (or at least in the same key?) to keep it hearing fine. Now I assume this has to be the case for every instrument, including hats, snares, toms... everything. Most of the times, I just use samples from sample packs for my percussions. Now my question is (finally), how do you guys know what note it's in? Of course you would have the art of hearing which note there is, but as I don't trust my ears enough yet is there another way to determine the note of the sample?
I also have G-Tune, but that doesn't seem to work all the time or it gives a very inconclusive note.

[Asklepios]

You're right, you need to tune drums to fit in the track.

Dyro made a short tutorial on how to do it on FL Studio, but I'm pretty sure there are some tools that can do the same in every daw.

Check this : https://www.youtube.com/watch?v=2SIgr3zPOk4

Hope this helps.

[nerz]

you could try this one:

[Valadia]

Thanks guys, this helped out a lot.