Probably Asio4All needs to be configured... I can't help much on this, as we test RB only on native ASIO cards w/o using Asio4All.
I'd start with checking sample rate frequencies - they should match the ones selected in RB's playback settings.
An update on the soundcards not staying in sync.. - Not a big problem now!
The SC setup is with 2 soundcards, 1 for output and the other for monitor and prelisten.
After running 10 hours, the 2 SCs are not perfectly in sync but very close.
Another early morning job, getting the system fine tuned.. I played with buffer sizes but in the process also changed to RadioBOSS 126.96.36.199, when you released it. I was getting very tired by this time. I am not sure if it was fixed by getting the right buffer sizes or something you changed.
Also to add to my morning excitement! LOL
I was really taken off guard when RadioBOSS shut itself down with no warning.
At first I thought it had crashed..
Then RB wanted the registration code.. this had me confused.. It was 4:30 in the morning almost to early to be thinking. I shut down RB and restarted.. it let me get back on the air, in demo mode.
At this point, I was not sure what to do. I had to try something so I entered the registration code I had.. This fixed it RB and I were both happy!
I checked Help > About.. and see that you have thing well under control!
4.9 is planned for April 2013.
I will be here as long as nothing out of my control comes along.