Originally Posted by comfynumb
Yes iTunes downloads are ACC. I'm more concerned with ripping my cd's than the downloads. I also have NERO, which I don't use much, but I can rip them to FLAC in that program. I read that too, my only problem was the cd's I ripped in iTunes the past couple of years showed up in the 93, but wouldn't play them. I think it's called apple lossless. Weird but I had to convert them to play.
CDs effectively store the songs as wav files on the disc: ripping them to wav or FLAC is lossless and the quality of either will be identical to that which is on the CD.
If iTunes provides songs as AAC (a lossy compression), then they have taken those original wav files from the CD and compressed them, throwing away some quality in the process, which you can never get back. AAC is similar to mp3 in this respect. Converting AAC or mp3 to wav or FLAC will never equal the quality of the original wav files on the CD and is sort of pointless, unless AAC or mp3 is not supported in the player and wav or FLAC is.
Apple also has their own version of FLAC called ALAC. It is possible to convert between wav, FLAC and ALAC without any loss of quality.
The problem with downloading any file is that you never know whether any filtering was performed on the original wav files from the CD before it was output to FLAC, ALAC, wav, etc. Although improbable and pointless, it is technically possible to rip a CD to mp3, convert the mp3 to wav and then convert the wav to ALAC or FLAC: although the output format is lossless, it does not tell you the quality of the data inside it, only that it reproduces that quality without further loss. Just as Bluray is a technically high quality format, it doesn't stop the studios from issuing a crap encode in that format, compared to the original film frames.
I guess the Oppo 93 does not support ALAC, so for playability you could convert them to wav or FLAC without additional quality loss.