How to get airplay on BET?

If you are referring to the cable TV network, it uses sales (CD sales, iTunes sales, etc) and radio airplay to determine which music to play. BET also will promote new and up-and-coming bands sometimes; you might hear a new artist in the background music of one of BET's programs, for example, or there might be a feature about a particular artist. Also, if a famous performer like Usher or Jay-Z or Beyoncé champions a particular new band, BET might decide to play their music. But for the most part, BET does not break new artists; the channel mainly reflects what is already popular.