If all you need a sound editor for is to convert stereo » mono, you don't really need Sound Forge.  Something like Audacity should be able to do the trick.

Alternatively, dump the RCO with rcomage (don't convert VAGs), and edit the XML to say there's only one channel for the audio.  After saving the XML, compile it into an RCO.
Setting the channel count to 1 will just take the left (I think) channel.

Thanks for the theme by the way.

(This post was last modified: 25/11/2014 12:28 AM by ZiNgA BuRgA.)