reFX Software, Inc., the Canadian maker of professional-grade music mixing software plug-ins, has filed at least two mass Bittorrent lawsuits in federal courts in Illinois and Missouri.

reFX makes plug-ins for ROM sampler or “Rompler” software engines commonly used by electronic and dance music-makers to synthesize tracks. The Complaint includes an explanation for these products which is not entirely clear as to which products are included in the lawsuit, but states that it includes the registrated copyrights for Nexus 2 and Nexus 2.2.0

These reFX products retail for $299-2,899, depending on the features included.

The lawsuits include reFX Audio Software Inc. v. Does 1-39, Case No. 4:13-cv-895, filed 5/10/13 in the U.S. District Court for the Eastern District of Missouri; and reFX Audio Software Inc. v. Does 1-180, Case No. 1:13-cv-3524, filed 5/10/13 in the U.S. District Court for the Northern District of Illinois.

The Complaint was filed by Paul Lesko of the Simmons Browder law firm in Alton, Illinois.