I have been also trying to tune cowbell samples that I have with FL Studio's factory sample library.
But they always sound somehow off-key when I play them together with pianos (FL Keys) (there must be something wrong what I am doing with the cowbell samples).
Example: I play the 808 Cowbell from FL Studio in C note (Packs -> Drums -> Percussion).
FL Studio's tuner says it is G#, and FL Studio's pitch detector say it is C#. If I tune it to C#, it is still a little bit off-key when played with other iFL Keys. If I tune it to G# it is also off.
Edit: I want to use cowbell as instrument, not just percussion.

