The CD Data Base (formely CDDB). Enabled CD players can query for playlists. [Description from dmoz]
Whether your taste in music tends toward Graceland or the Blue Note Café, Gracenote will send you the songs you seek. The company (formerly CDDB) provides music recognition technologies that compare digital music files to a worldwide database of music information, enabling digital audio devices to identify the songs. The company licenses its technologies to developers of consumer electronics devices and online media players, who integrate the technologies into media players, home and car stereos, and digital music devices. Offerings include the CDDB music identification service and the MusicID universal identification system. Gracenote was acquired by Sony for $260 million in 2008. [Description from Hoover's]
We do not have enough information to provide a traffic estimate. When Quantified, this report will provide detailed, accurate audience information. This site reaches fewer than 2000 U.S. monthly people.
Index represents how a site's audience compares to the online internet population as a whole. An index of 100 indicates a site's audience is at parity with the total internet population.
The affinity numbers represent how likely a given visitor is to visit one of the listed sites or categories compared to the internet average. For example, an affinity number of 10.2 would say that a user on "X" website is 10.2 times more likely than the average internet visitor to visit the other site or category that is provided.
This website is Quantified, and the data displayed here is directly measured by Quantcast.
Addicts are the hardcore segment of a site's audience, who have 30 or more visits to that site in a month.
Regulars refers to a segment of a site's audience that frequent a site more than once per month but not as much as addicts who frequent a site 30 or more times per month.
Passers-by have a single visit over the course of a month.