I have an issue with rygel 0.20.1 (from debian jessie repo), when playing flac files from foobar2000, foobar freeze without any error message on foobar console nor rygel log.
If I play the same file on rygel 0.14.3 (from debian wheezy) it works without any issue.
Also if I try to play the file with gstreamer1.0 gst-launch it play the file smoothly.