Is 'Church Hopping' a Sin?

A caller named Tammy asks Father Dave about attending Mass at different parishes in her area. She asks, "If I go to different parishes for convenience's sake — say, this Mass time works better for me at this other church instead of the parish that I belong to — and it seems like the majority of the time I'm attending Mass at a different church than my parish that I belong to, is that a sin? Is that something I need to confess, that I need to be at my own parish more often?"