San Francisco-based SendMe Mobile, a provider of mobile media sites, said this week that it has inked an agreement with Warner Music Group, where it will offer content from WMG's roster of artists. According to the firm, SendMe and WMG will create a series of premium, SM subscription products, including ringtones, video "ringers" and wallpaper images for mobile phones. Financial terms of the deal were not disclosed. SendMe is venture backed by GrandBanks Capital, Spark Capital and True Ventures.