Hello,
First I want to confirm that this is the article you are following to convert onTextData events to ID3 tags:
Next since you mentioned JWplayer I want to be sure you have seen this forum post:
Lastly you can convert your incomng MP3 stream to an AAC stream, or you may want to explore converting to TS chunks for more widespread delivery through the transcoder:
After reviewing these articles if you still need assistance, please let me know, and if possible explain your work-flow / user case in greater detail so I can better assist you.
Regards,
Jason Hatchett