I haven't messed out with the library source yet, but do you think it would be possible to get a more instant playback and re-play by setting an initial file, and just have it play, and re-play when requested? This way I could use this to playback long drum sounds. (crashes and cymbals) I need this for a small project I'm doing. 
Maybe an option to open the file and have it used until said to open a new one? Also, an option to re-start the file, even if its not done yet, for when you play a drum sound, you are in the middle, but needs to re-trigger the sound.