CNN reports that more than a million households deleted all the digital music files they had saved on their PCs in August, a sign that the record industry’s anti-piracy tactics are hitting home. It quoted research company NPD Group as crediting the ongoing anti-piracy campaign by the Recording Industry Association of America (RIAA) and said publicity about the move led more consumers to delete musical files. In August, 1.4 million households deleted all music files, whereas prior to August, deletions were at much lower levels, according to Port Washington.