Tyrell release a new version of Speccyal K with a little change:

Minor update: sound is rendered in 44,1 khz instead of 22 khz and it seems to have an impact over the background noises (this problem drives me nuts!) that have plagued the emu until now. For example, if you have noise in Gunrunner or other games, get this version. This is not an update to absolutely get, but if you cannot bear anymore those noises, this update should make you happy.