The Sven Co-op team has released an update to sven 4.0 beta.

You can download the new update from snarkcafe Sven Co-op 4.06.exe

Only a few things were fixed in this update, most notably there is now cl_stopsound for clients to use. Also fmodex is updated in this release, hopefully there will be less crashing due to fmodex. For more information on the updates in this release please visit svencoop forums: v4.05 Hot Fix To Be Released Tonight

One Important thing to note about this update
There appears to be more entity's added in this release, which will cause maps with high entity limits to crash on map change. I highly suggest server operators use the .gmr feature introduced in the 4.0 beta to correct this issue. In the mean time Bard will be working on trying to correct maps that aren't compatible with 4.06 as soon.