The new version of Replay A/V that is about to be released to the public works well with these new FLV encoded streamtheworld radio streams. It can properly stream-capture these station types as .FLV files, and they can be converted using the built-in Replay Converter to MP3 or other audio types.

Some stations that stream this way include:
KROQ
KYXY
KFROG

The new version of Replay A/V will also locate the stream URL for these station types.