just got my squeezebox touch and wanted to try the 96/24 playback. so i went to my copy of "raising sand" that i downloaded in flac a long time ago from HD tracks as an experiment to see if i liked it. when i popped it into my computer to download into squeezebox, it rejected it. i opened the downloaded files to look at them and instead of flac they are listed as BUP, IFO and AOB files? do these need to be/can they be converted to flac? i realize these are dvd files, why do they have it in this format?