DJ's can get tunes at a discount via Beatport - See the codes below
From the about page
Founded in 2004, Beatport is the largest music store for DJs in the world. Beatport offers music in premium digital formats and provides unique music discovery tools created for and by DJs. Each week, Beatport's music collection is refreshed with hundreds of exclusive tracks by the world's top dance music artists. Beatport is privately held and headquartered in New York, Denver, USA and Berlin, Germany.
Currently working codes:
MXMGMAY15 for 10%
MXMGMAR15 for 15%
DJTIPS25OFF for 25%