BBC Radio 3, the classical station of the BBC, is testing streaming in lossless format using FLAC. If you’re in the UK, you can try it out now. You’ll need to use Firefox, though some hi-fi streaming servers will be updated to offer access to this streaming quality. Cambridge Audio is looking for beta testers for this service if you have one of their devices.
The BBC discusses this project here. It looks as though the trial will last for at least five months.
If you are in the UK, and listen to classical music, try it out. It’s hard to perform a proper A/B test, but you could open two browsers – Firefox or another – and play from one, stop, then play from the other, to see if you hear the difference. If you try this, drop a comment below about your experience.