I am unable to reproduce this problem on neither my dev system nor my production system. I would initially suggest completely removing the internet radio stations and attempting to re-add them. Beyond that have a look at the DCERouter log to see if anything pops out as an error. You may need to increase the logging levels in DCERouter to get useful information.
That's not a piece of information that you shared, since you made no indication that you had changed it back I, of course, assume it is set as you said it was. Specific information is *very* important in troubleshooting.
That's interesting. All of the configs look correct. You can try a couple of things, run alsamixer and see if anything on card 1 is muted, use speaker-test to see if your nvidia card is using one of the other device outputs: 3,8 or 9. 7 is the most common, and the default. We do have detection code to determine if you are connected to a different output device but if that doesn't find anything it will default to 7.