Hello Airtime community!

I have recently successfully installed Airtime on Ubuntu 14.04 machine. Everything is/was fine, until I encountered strange occurrence. I don't know if it is a bug, let me describe:
- I modified liqiudsoap script to play offline music from certain directory on disk.
- Songs from this folder played one after another - all ok.
- After about 7h stream was still on, but it was silent. Songs were changing normally, but from some point all of them were just minutes of silence.(!!!)
- Another attempt gave the same result after about 7 hours.

What if checked:
- for sure it is not problem on listener side, I listened to silence on several devices.
- on Airtime page in settings/status everything is ok.
- I was recording stream with streamripper, found moment, that it goes off. It's in the middle of the song, that suddenly goes silent.
- Every time it is the same with different songs.
- I have looked at the logs of icecast, liquidsoap, but haven't found nothing strange: no errors.
- I used second computer with same configuration, one streaming to another. Only first gave silence after some time, stream from the second was ok.

It is frustrating, that I have to use this first server, with some bad liqiudsoap case. Tell me please, what can I do/check, to find the possible cause? It looks like liquidsoap problem, but I cannot be sure. I will appreciate your help.

Best regards.