Liquid Audio has released Liquid Player Five for Mac as a free download. Like iTunes, Liquid Audio streams and downloads tracks and integrates ways to buy tracks online.

It support most digital-music formats, including AIFF, MP3 and .WAV. It also supports security and digital rights-management systems.

Company president and CEO Gerry Kearby said: "Since our inception we've supported the Macintosh. The advanced features and capabilities of Liquid Player Five make it easy for Mac users to purchase and playback copyright-protected music from major recording artists."

New features in this iteration of the application include its powerful online purchasing feature – which will enable online music purchase without a browser. It also offers an improved music organiser, and will play music in the background while another application is in use.