Kid Rock has ended his long holdout from making music available to digital music services by granting Rhapsody a four-month exclusive on his catalog.

Starting today (Oct. 3), Kid Rock's music on Rhapsody is available for DRM-free purchase as full albums only, while individual songs can be downloaded only under the subscription plan, or streamed via the services' 25 free songs a month offer.

Rock has been a vocal advocate of keeping music available only as full albums, which is the root cause of his music's continued absence from the iTunes music store. Apple's Steve Jobs insists on selling all music as both albums and as singles.

The addition to Rhapsody does not come as a complete surprise, as Rock told Billboard last month that he was planning to add his music to digital retailers soon. After Rhapsody's exclusive ends, expect it to appear on additional services, with the caveat that any making it available must do so as a full-album sale only.

The lack of Kid Rock music on iTunes has led to two cover versions of his hit single, "All Summer Long," both of which have posted respectable sales numbers. Hit Masters' version has sold more than 267,000 downloads, according to Nielsen SoundScan, while Rock Heroes' take on it has shifted 137,000.