There appear to be some copies left:And if you ever find a recording of his Missa Fortuna Desperata, please drop me a line.
Perhaps you've heard of this release already. It's a double album with the masses "Fortuna desperata" and "Rose playsante". The kyries of both masses are Obrecht at his best, and some of the best Renaissance music from those decades, at least to my ears.
The singers do a fine enough job, maybe a bit too slow in tempo, and with a rather strange balance, with the bass dominating, especially in "Fortuna desperata", and the tenor sometimes being drowned out. On the other hand, you have close miking and everything that that implies, as well as generally excellent singing.