I am seeing in the thread here that other people are also having some FLAC transcoding issues.
I had issues like this on my Subsonic server as well after the upgrade - some FLAC transcodes perfectly fine, but certain albums\songs just won't transcode. The transcoder starts, CPU is used for a bit, and then it's like no MP3 data is ever sent to the client. The issue doesn't seem to be intermittent or random, it seems to be with specific FLAC files. Some FLAC files consistently transcode and play fine, other FLAC files never played for me after the update.
I noticed a change in the ffmpeg version in the new bundle... The new version is
ffmpeg version N-61445-gdded5ed and the version in 4.9 was
ffmpeg version N-31780-gd5d74cf.
I worked around the problem on my server by taking the ffmpeg binary from /var/subsonic/transcode/ on a 4.9 installation and dumping it into /var/subsonic/transcode/ on my 5.0.beta1 install. So far, I've had no issues from doing this. However, this issue needs to be addressed officially before this beta becomes mainstream...
Sidenote: The desktop notifications are
awesome! I've always wanted functionality like this in Subsonic.