Music stops playing, connection lost

[marc-smits]

At a random moment within the first five minutes iTunes stops playing and the connection with the server is lost.

What do the errors mean and how can it be fixed?

Running

Forked Media Server: Version 0.19gcd on Debian 7.4
iTunes 11.1.4 on OSX 10.9.1

Log (debug)

[2014-02-10 21:01:27]    httpd: Kicking off streaming for /data/shared/music/va/blaxploitation - soul jazz and funk/01 donny hathaway - the ghetto.mp3
[2014-02-10 21:01:32]     scan: Could not extract metadata for /data/shared/music/manu chao - clandestino/AMG review.txt

[2014-02-10 21:03:51]    httpd: Connection failed (fd 23)
[2014-02-10 21:03:51]    httpd: Connection closed; stopping streaming of file ID 32485
[2014-02-10 21:03:52]    httpd: Connection failed (fd 24)