Over the weekend I was looking up how to rip my Blu ray movies and still keep the 7.1 surround sound. I read some articles that said to use ByteCopy. I'm running my audio through an Emotiva UMC-200 which is made for 7.1 surround sound and wanted to keep the quality of my Blu rays. The lossless mode in ByteCopy copied out the 7.1 sound without a glitch. Thanks for such a good product!