Hi guys we aren’t able to do this yet. Part of it is due to licensing restrictions. Best bet for now is find some WiFi!Jorge L commented
Something like Spotify have a offline playlist when we don't have internet connection
Have you tried our “playlists” feature? Simply swipe left on your phone and click the lists icon to discover some of the hottest new songs. We’re also continually adding new songs to the Jam database.
Jam Support Team