Sound Ideas SFX Effects Library Series 6000 Extension Set (20 CDs). This is an Extension set for the 6000 General library. There are 20 discs in the Extension set. Disc numbers 6041 through 6060. Very good condition from a professional recording studio. All discs play and cue properly. Sets is from 1997. Will ship Media Mail to save on cost. Please email with any questions and check my other listings for other sound effects.