boothosting

Hi all,
I have finally found that I can stream from the mic in of my soundcard to a shoutcast server with this pipeline:
gst-launch-0.10 alsasrc device=plughw:1,0 ! audioconvert ! lame ! shout2send protocol=2 ip=<ip_shoutcast_server> port=<port_shoutcast> password=<shoutcast_pwd>

I want to send 2 streams at the same time, 1st on mp3 to one port and 2nd on mp3 another bitrate to another port, but I don't know how to create the pipeline.
Any thoughts ?
Thx in advance