Teramac

XLD is set at a bit rate of 48Khz and a bit depth of 16. The slower speed is nowhere near 1/2, just enough to make a female vocalist sound a bit masculine. Maybe the Sonos is confused between 48K and 44.1?

Hadn't even considered that playback speed and frequency were independent in the digital world. Yes, the files play more slowly on Sonos than with iTunes and they also have a frequency shift down, essentially like a turntable at the wrong speed. Maybe the belt is slipping on my D/A converter?

Have not seen anything related, apologies if this is an old issue. Some early imperfect rips in iTunes convinced me to switch to XLD to create my lossless files (ALAC). Having the error check displayed seems a nice feature you don't get in iTunes and it has worked well for 1,000s of files....until now. My rips are stored on a networked hard drive in an iTunes library. I routinely play those with iTunes, stream them to a Naim Uniti, or play them on a Sonos system. I recently discovered one file that plays at a noticeably slower speed on my Sonos amp:connect with an obvious key change. The same file from the same location plays fine with iTunes. A rip of the same CD using iTunes to ALAC produces a file that plays correctly on both systems. A second rip of the same CD using XLD reproduces the error. Since it is reproducible, I'm left wondering which of my files might play slowly if I'm using the Sonos. (There's some chance that Sonos may investigate this but since it only happens with XLD, their initial advice is to switch to iTunes.) Has anyone seen this behavior with XLD? I assume there's timing that is part of the codec but not a clue how the various ripping apps encode that. Is there any software that can analyze my rips to determine if the timing flags are correct or not? Any thoughts appreciated.