I think rmvb support from v0.90 is OK so far.
The problem is the streaming (HTTP) module, it is not even working for the regular AVI file. I have tried these which worked well with the formal v0.8.6.
Can I volunteer to test the development version? I am eagerly waiting for the RMVB support in VLC, so I can stream rmvb over network to play in my network media tank. NMT has no native HW support for RMVB.Patch is merged in development version. Plays RV40 nicely.