Hey, thanks for all the answers.
@Iwpss & @DonStroganotti: The negative delay is a feature i didn’t know about (even though i saw the millisecond text-box in the mixer channels and wondered what it is good for). Sounds like a good solution. The samples are from CineSamples and i think the dilay should be consistent, with exception of Voxos’ Phrase-Builder sounds. Not sure why you suggest a different DAW, though. (In general i’m pretty used to tracker DAWs, played a bit with FastTracker 2 a long time ago and then Buzz, while i never liked the Piano Roll design of other DAWs.)
@keith303: Not sure if i just used the wrong terms, i’m not used to them. At least there’s no silent delay before the samples, if it’s that what you mean. The library comes with different articulations, in some articulations the samples play in time, the main problem are the sustain samples which have this long attack or legato or however to call it :).
@OopsFly: I have to check this, i’m not absolutely sure what you mean or if this helps me, since i assume you’re talking of Renoise standard-sample features, where the instrument itself is based on the sample (while my instrument is a plug-in sample player that plays some kind of special sample-format)