We know that audio quality can color the experience of listening to a live recording. Just like every artist is unique, so are the conditions that contribute to the quality of each recording. The microphones, mixing console, even the electrical wiring in the venue plays into it. We do everything we can to ensure a high quality recording but encourage you to listen to samples to make sure the quality meets your expectations.
We recently increased the default recording quality on our recording applications to 192 kbps. Since we stream the recordings during the show (to ensure that they're available immediately after the performance) we have to be aware of sometimes spotty WiFi or cellular coverage in venues. We do allow artists to upload up to 320 kbps MP3 files and are working on a way for artists to offer both MP3 and FLAC files.