New York - Mobile entertainment publisher Cellfish Media said on Tuesday that it has partnered with New York radio station Hot 97's DJ Envy to offer The Mobile Mixtape, a weekly series of exclusive tracks featured on his syndicated show that will be delivered to mobile devices. Cellfish will offer seven-track mixtape compilations mixed by DJ Envy, available as ringtones and full-track downloads available for a per-download fee or bundled in discounted packages.