I have just wasted a lot of time trying to understand why my standalone Linux installation of Subsonic wasn't working after I had carefully followed the Standalone Installation instructions
http://www.subsonic.org/pages/installation.jsp#standalone on the Subsonic website. FortunateIy I eventually found the instructions in the wiki
http://sourceforge.net/apps/mediawiki/subsonic/index.php?title=Linux_stand_alone, at which point I realised that the other instructions were extremely incomplete and broken. I suggest that you take the instructions off the website and link to the wiki instead to save other people this hassle

.
It would also be good to mention somewhere that Debian and Ubuntu are currently using avconv from the package libav-tools instead of ffmpeg - I also spent a while trying to track that down until I found a post in the forum explaining it.
Thanks for what looks like a great product,
Fritz