Mp3 stream bitrate limiting

I'm trying to have lms (squeezeserver on a Raspi) take an mp3 webstream and output to a lower bandwidth stream. For some reason, the same stream sometimes correctly gets routed via Lame.and other times doesn't. The error in the logs makes it seem that it can't find a matching converter that supports url streaming (R) .

Any ideas where to go with this?

Also, is there a way to do 32 bit output, like lame supports?

Thanks