Art In Releases, a branch of Audition Records, curated by Julian Bonequi. As opposed to the extensive archive of Audition Records (which you can check out and download for free here
), Art In Releases offers audio of sessions recorded at Transfertlab Studios in Berlin, in any digital format you might prefer, including lossless.
It's not free, but you could be happy to know you'll be supporting the funding of more awesome releases in the future if you decide to buy. Three installments to date: "Shishupala Vadha", by Yvan Volochine; "Qualcosa di Simile al Nero", by Andrea Belfi; and "Timelessness Fakes", by Ansgar Wilken. The latter, released just today. Next month, I think it's highly possible they'll release a new installment, by Okkyung Lee.