ESET Security Suite and sharing media to stereo attached by ethernet cable

I've hit a weird snag using ESET Security Suite (v.3.0.684.0) on Windows Vista Ultimate 64 bit.

I use the firewall in automatic mode, it hasn't steered me wrong yet but I'm not sure what's wrong.

I have a Denon AVR 3808ci that I have connected to my computer to share media files via a DSL modem/wireless modem/router combo (Speedstream 6520)

The problem is that while the Denon sees the files on the PC, it cannot play them while the ESET software is engaged. If I try, the radio simply replies with the file name but no music. If I stop the ESET software, the music starts and I can then restart ESET, making sure to allow all on the "System" process tree or the music will stop again.

Any ideas? Is there a way for ESET in automatic mode to allow all communications to the port on the router to which the Denon is attached? Thanks

NefCanuck

 

Have you selected sharing mode for the network in ess?

 

I do that and the Windows dialog box pops up and "Allow Sharing" is already ticked

NefCanuck

 

I'm not sure what you mean by windows dialog, it should be an ESET dialog. Could you provide a screenshot?

 

As requested, here is the screen I was referring to:

NefCanuck