1. A method for execution by a computing device, the method comprises: determining whether to complete downloading of a data segment of multi-media content to an accessing device, wherein the data segment is dispersed storage error encoded to produce a set of encoded data slices, wherein the accessing device receives a partial set of encoded data slices of the set of encoded data slices during a pre-download process of the multi-media content; when the downloading is to be completed: determining, for the accessing device, a user set of encoded data slices for accessing the data segment, wherein the user set of encoded data slices includes first and second sub-sets of encoded data slices of the set of encoded data slices, wherein the first sub-set of encoded data slices includes less than a decode threshold number of encoded data slices; determining whether encoded data slices of the partial set of encoded data slices substantially matches encoded data slices of the first sub-set of encoded data slices; and when the encoded data slices of the partial set of encoded data slices substantially matches encoded data slices of the first sub-set of encoded data slices, sending the second sub-set of encoded data slices to the accessing device.