A computer implemented method for non-destructively generating a file based master comprising: (a) obtaining a domestic source with textless content, wherein: (i) the domestic source comprises domestic audio content and domestic video content; (ii) the domestic source comprises texted portions; and (iii) the textless content comprises one or more portions of the domestic source that corresponds to one of the texted portions and that is devoid of text; (b) receiving a localized source, comprised of localized audio content and localized video content, based on the domestic source; (c) comparing the localized video to the domestic source to determine where the localized video is different than the domestic source; (d) cutting the localized video and realigning the localized video with the domestic source at the determined different locations, such that the localized video lines up and is synchronized with the domestic source; (e) transposing metadata regarding the determined different locations onto the domestic source, wherein the determined different locations are removed from the domestic source; (f) identifying portions of the textless content that correspond to the texted portions in the domestic source, and cutting and overwriting the texted portions in the domestic source with the corresponding portions of textless content; (g) creating texted material based on the localized video and the texted portions; (h) discarding the localized video content and the textless content; and (i) combining the localized audio content, the created texted material, the domestic source, and the metadata into a playlist that represents a localized file based master. (a) obtaining a domestic source with textless content, wherein: (i) the domestic source comprises domestic audio content and domestic video content; (ii) the domestic source comprises texted portions; and (iii) the textless content comprises one or more portions of the domestic source that corresponds to one of the texted portions and that is devoid of text; (i) the domestic source comprises domestic audio content and domestic video content; (ii) the domestic source comprises texted portions; and (iii) the textless content comprises one or more portions of the domestic source that corresponds to one of the texted portions and that is devoid of text; (b) receiving a localized source, comprised of localized audio content and localized video content, based on the domestic source; (c) comparing the localized video to the domestic source to determine where the localized video is different than the domestic source; (d) cutting the localized video and realigning the localized video with the domestic source at the determined different locations, such that the localized video lines up and is synchronized with the domestic source; (e) transposing metadata regarding the determined different locations onto the domestic source, wherein the determined different locations are removed from the domestic source; (f) identifying portions of the textless content that correspond to the texted portions in the domestic source, and cutting and overwriting the texted portions in the domestic source with the corresponding portions of textless content; (g) creating texted material based on the localized video and the texted portions; (h) discarding the localized video content and the textless content; and (i) combining the localized audio content, the created texted material, the domestic source, and the metadata into a playlist that represents a localized file based master.