Methods and arrangements for facilitating generation of media mixes for a program participant based at least in part on media library inventory information provided by a number of program participants. In certain embodiments, the system is configured to allow a user to create songs that comprise a plurality of instruments and genres of music into one complete song. The swirling increases the through capacity of the treatment device and reduces the amount of particles that would otherwise become imbedded in the filter media. The surface light source unit provides high uniform illumination for a liquid crystal display panel. The soft resin composition for denture base is constructed of a acrylate monomer having at least one unsaturated double bond; an aliphatic acid ester-based plasticizer; a acrylate polymer or copolymer; and a polymerization initiator. In the present invention, a signal processor is inserted in the link between the game console and the television set and auxiliary displays are provided that are visible only to individual players.