Ignore what anyone says - it is NOT possible to get perfect sound with this game. The FX are okay (not perfect, particularly on spell effects) but the music is anus - all the harmonies and tracks and stuff are all over the place.There is no solution to this - believe me, if there was I'd have found it.
Also, CdBuRnOuT has mentioned in another thread that epsxe doesn't yet emulate some of the functions which Tactics uses for its sound. Perhaps in 1.3 - who knows.