Fabrizio Bartolomucci introduces Jam Session 1.0, a new iOS app for creating gapless playlists for Zumba, aerobics and dance classes. Jam Session allows anyone to select a number of tunes from their iTunes library and assign them to a playlist. Once the playlist is started, the tunes are played in a row without any interruption between them. The app uses a proprietary algorithm to find the right point of change with the next song and seamlessly merges the two. Jam Session is $6.99 and can be downloaded from iTunes.