The service is scheduled to go live on April 29.
For $14.95 per month, subscribers will get unlimited listening privileges for their PC and digital music players with the option to download songs to own for 99 cents each. The opening promotion will offer new subscribers the first month free and five complimentary song downloads.
As on the regular Napster site, users will be able to browse other members' playlists and collections, as well as post to message boards.
The Circuit City + Napster service will offer weekly exclusives on certain new releases that will not be available on the regular Napster.com site, according to Jackie Foreman, a spokeswoman for Circuit City.
Circuit City's stores and online site will sell gift cards for the music service in denominations of 15, 25 or 60 tracks.
Circuit City already sells gift cards for Napster, Zune Marketplace, eMusic and Urge.
Napster also has other partners. AT&T announced at the CTIA Wireless trade show in early April that it will offer a free year of
Last year Circuit City rival Best Buy teamed withto launch the Best Buy Digital Music store powered by Rhapsody.