RealNetworks announced a new “to go” option for its Rhapsody music service to allow subscribers to transfer monthly song rentals to portable devices. The new Rhapsody to Go service is priced at $14.95 a month, mirroring the price point used by rival Napster. Like the similarly named Napster to Go, RealNetworks’ version launches with support for two recommended handheld devices–the iRiver H10 and Creative Zen Micro.