A consumer who encounters music of interest can operate a portable device to obtain a display of associated meta data (e.g., the title and artist, the artist's concert schedule, etc.) obtained from a remote computer system. The consumer can then initiate an electronic commerce transaction from the device, e.g., ordering a copy of a song. The song, or a link thereto, can be sent to the consumer (either at the originating device, or a separate device), or can be sent to another person designated by the consumer. A variety of other technologies and arrangements are also detailed.