OMAHA, Neb. (AP) _ The operators of four stores pleaded innocent Tuesday to charges of selling obscene music recordings to minors sent by a city councilman to buy the records in an unofficial sting operation.

The stores pleaded innocent to charges they sold the sexually explicit 2 Live Crew album ''Sports Weekend'' to four teens, ages 13 to 17, sent by Councilman Steve Exon and an anti-pornography group called Omaha for Decency.

J. William Gallup, an attorney representing Trans World Music of Albany, N.Y., which operates two of the stores, said he will argue there was no criminal intent when the album was sold.

He said Trans World has a policy against the sale of explicit albums to anyone younger than 18. The Nebraska law prohibits the ''knowing'' sale of obscene materials to minors.

Co-owners of two Omaha Pickles Records and Tapes also pleaded innocent.

County Judge W. Mark Ashford said a jury trial would be held in July or later. The defendants face a year in prison and $1,000 fines.

In 1990, a Florida judge ruled that 2 Live Crew's ''As Nasty as They Wanna Be'' album was obscene, but a jury acquitted the group of obscenity charges for performing the songs.

Thirty-five states have laws similar to Nebraska's, although no cases under those laws have gone to court, say representatives of the American Civil Liberties Union and Trans World, which has about 600 stores in 33 states.