If it's the same "factory music" that was used in the old Looney Tunes cartoons, it's called "Powerhouse", it was composed by Raymond Scott in 1937.
From Wikipedia:
?Powerhouse? was first recorded by the Raymond Scott Quintette (actually a sextet) in New York on February 20, 1937, and was commercially released on the Irving Mills-owned Master Records label (catalog #111) coupled with another Scott composition, ?The Toy Trumpet.? Both titles remained in Scott?s repertoire for decades, both were adapted in Warner Brothers cartoons by WB music director Carl Stalling.
The original Raymond Scott Quintette recordings, including ?Powerhouse,? were licensed in the early 1990s for use in soundtracks on The Ren and Stimpy Show, and can be heard in twelve episodes. Various passages of the tune have been arranged for use in The Simpsons, Duckman, The Bernie Mac Show, and The Drew Carey Show (in a brief scene involving an animated character). An entire 1993 episode of Animaniacs, "Toy Shop Terror," was set to Warner Bros. music director Richard Stone?s arrangement of the composition. "Powerhouse" also served as bumper theme music for the Cartoon Network from 1997 to 2002, and can be heard ten times in the 2004 feature film Looney Tunes: Back in Action.