This report contains the results of a study sponsored by the National Library Service for the Blind and Physically Handicapped to investigate the implications of converting its audio magazine program from flexible disk to audiocassette. Specific issues to be considered included whether or not such a conversion would represent: (1) a financial savings in any or all phases of production or delivery; (2) interruption in service to NLS/BPH talking book machine patrons during equipment transition; or (3) any kind of environmental hazard upon disposal of used cassettes. The groundwork of the study involved visits to four potential commercial producers of audiocassette magazines and preparation of numerous pro forma estimates of postage and landfill costs. The eventual recommendation was in favor of the conversion. The report provides suggestions for specifications in the cassettes' production and packaging and for the timespan over which the conversion should be incrementally implemented. It also allays many of the concerns of the NLS/BPH regarding cost (cassettes will likely save the program money if it uses disposable ones rather than ones that are returned to the NLS/BPH for degaussing and rerecording), patron inconvenience (the library reportedly has enough preexisting unassigned cassette machines for any users needing them), and the environment (the cassette are deemed non-hazardous waste). Numerous tables and figures delineate the study results. (BEW)