CheckOut.com is an entertainment-focused e-commerce Web site backed by Hollywood mogul Michael Ovitz and Richard Wolpert, former president of Disney Online.
Under terms of the agreement, CheckOut.com will be the default music retailer on the RealJukebox interface and the exclusive provider for the music player's "Try it and Buy it" area, where users can preview songs and purchase the featured CD through direct links, the companies said in a statement.
The agreement gives CheckOut.com access to RealJukebox's audience of 10 million users and will allow RealJukebox users to directly access CheckOut.com's offerings of content and commerce, the companies said.
"CheckOut.com's alliance with RealNetworks and our presence on RealJukebox is the first step in implementing our digital music strategy," Wolpert said in the statement. The alliance "puts CheckOut.com at the forefront of the digital media space."
In addition, visitors to CheckOut.com's Web site will be able to access RealJukebox to play, manage, personalize, and download music, the companies said.
RealJukebox is an application that converts, or "rips," compact discs and translates them into a digital file format. It also automatically enters information such as song title and artist into a manageable database of music downloaded from the Internet or CDs.
RealNetworks last month released an updated version of RealJukebox and teamed with Warner Music Group, one of the "Big Five" record companies, to offer songs for download from popular artists via the RealJukebox player.
Today's announcement comes as media companies increasingly are using the Web to distribute popular music.
For example, Virgin Entertainment Group last week launched an online service dubbed Virgin JamCast in association with Wavo, whose technology is meant to speed the delivery of online music content.
CheckOut.com also said today that it plans to launch a national marketing campaign in early October.
News.com's Jennifer Balderama contributed to this report.