Does Liquid Audio compete with RealNetworks?

No. RealNetworks is a partner that makes two of the most popular music players on the Internet today: RealPlayer and RealJukebox. Liquid Audio and RealNetworks work together to make it easy for music fans to play back Liquid Music on RealNetworks players using Liquid™ plugins

The Liquid Plug-In for RealPlayer lets fans preview secure Liquid Music using RealPlayer. The Liquid Plug-In for RealJukebox lets fans purchase secure Liquid downloads from RealJukebox.