I have V158 of hijack on my mk2 Empeg, while testing the mp3 streaming to winamp [which works well] after I'd played a few songs (and I had closed winamp) -
Then I tried another song (and I hit the stop button in winamp after it had restarted itself) and within a few seconds of a song starting playing.

Then any song I tried to play from them on via the http interface would stop streaming at the same few seconds point where the song I stopped stopped playing.

Once I rebooted the empeg, problem went away again.
[variable not reinitialised properly or at all?].

Not sure if the problem is a bad error code returned from Winamp or what. The Winamp I'm using is 2.78

[Edit]
Try as I might I can't reproduce it now on V158 - and now I've upgraded to V160. I assume its related to some weirdness with Winamp as I had the Moodlogic plugin enabled at the time and it popped itself up when winamp did and when I closed the plugin it must have caused Winamp to spit back a bad error code to the hijack http server causing it to serve later mp3 files to that point only]. I've no idea what the problem is. I'm not worried by it as a reboot fixed it. However it could be a potential bug in the http server that should be fixed. If needed I will try and reproduce on a later version of the kernel to see if its still there].
[/Edit]