So the ChromeCast issue is not fixed? From Roon 1.8 (Build 778) is Live!:
Bug Fixes
This release also includes fixes for a number of bugs we’ve heard about from the Community, including issues with gapless playback on Chromecast and mounting of drives that use the ZFS filesystem.
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Chromecast
- Fixed gapless playback for Chromecast
- Improved buffering on slow networks.