Dionne Warwick has filed a lawsuit against an artist rights firm, accusing the company of stealing “millions of dollars in royalty income.” Artist Rights Enforcement Corp. first sued Warwick in December, alleging they were owed “hundreds of thousands, if not millions, of dollars” for work recovering the singer’s royalties. Their clearance of the “Walk On By” sample included in Doja Cat’s chart-topping “Paint the Town Red” was mentioned as a profitable transaction from which they have not been paid by Warwick. On Monday, Warwick’s lawyers filed a countersuit, accusing AREC of being a “Wolf in Sheep’s Clothing” that only claims to help artists “fight to make your music yours again.” According to the singer’s team, AREC was “cloaking itself in professional credibility while concealing its own self-interest.” Pitchfork has reached out to both Warwick’s representatives and AREC for further comment.…