Audio/video issue when network disabled

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http://crunchbang.org – When I disable network I get problems with audio and video playback - it will stop with some unpleasant sound effects every few seconds until I pause and start it again (or sometimes just moving cursor a bit works). I cannot imagine any logic behind behaviour like this and I don't know how to trouble-shoot it.Has anyone had a problem like that?Any ideas how to solve it? (HowTos)