Player stopps while playing big "data only" stream

I developped 2 applications. The first one creates a "data only" (NS.send()) stream. The second one, running on a different machine plays it back. While recording the stream and playing it back live, everything worked fine. In order to replay the stream at a later time i chose the "record" option. In my Media Server Application Folder several up to 4 GB (8 hours) files were created. When I try to replay the recorded streams with my second application, the player halts after several seconds. I have to mention that the stream is not constantly filled with data, there may be gaps of several seconds maybe even minutes.

I get the following NS status notifications:
Netstream.play.reset
Netstream.play.start
(NS.myfunction invoked a few times)
Netstream.Buffer.full
(NS.myfunction invoked several times)
Netstream.Play.Stop (no reason)
(NS.myfunction invoked several times)
Netstream.Buffer.flush
(NS.myfunction invoked several times)
Netstream.Buffer.empty