Preloader and Sound Object

My Flash site has a media player which uses the attachSound method to play and skip through 3 mp3s. As a result the preloader shows up after the movie has loaded 60%. To rectify this, i changed the Publish Settings under the Flash Tab so that the classes for AS 2.0 load in the 2nd frame of the Preloader Scene(I have separated the preloader and the main movie to diffrerent scenes..)
I read it somewhere that to correct a similar problem with MCs, you need to place them somewhere in the timeline (say,Off Stage), But how can same be done for Sound Objects.???