It looks like I'll be at home more or less full-time for the next couple of weeks at least (but let's not mention the new C word), so have set myself a few useful projects. One is going through our hundreds of CDs and ripping them for hard drive storage, cataloguing and replay. I'm ashamed to say the CDs have been in boxes for a couple of years, due to work on the house, so we've been using Spotify instead.
So this week (week one of several) has been a nostalgia trip as I rediscovered music I'd forgotten I had. I've been pretty disciplined, only listening to random tracks to check the ripping is ok and the directory accurate. In answer to the question, I'm listening to FLAC files at CD quality, usually while trying to read sleeve notes from the CD cases. Amongst the gems I've rediscovered: John Mayall's Bluesbreakers with Eric Clapton, the Jaco Patorius solo album, Crusaders "Street Life" and the Men at Work album "Business as Usual".
Pretty much only listen on Spotify. Normally just playlists or artist inspired "radio stations", but for the last couple days I've been listening to a couple of Grateful Dead influenced albums. Interludes For The Dead - Circles Around the Sun A various artists compilation titled Dear Jerry: Celebrating The Music of Jerry Garcia