DAAPD debugging
Verbose mode
DAAPD can be started in verbose mode by using the '-v' option. E.g., by running this command -
/path/to/daapd_folder/daapd -v
This can help in debugging.
TCPFLOW
TCPFLOW is a good utility to debug DAAPD. It can capture the information sent to a DAAPD client such as iTunes and one can see the content sent out by DAAPD.