you can download and try it (you need tcl/tk): http://aug.ment.org/scfront
edit the first two variables at the top of scfront with a text editor
and then
chmod +x scfront ./scfront
hit the "start sclang" button
you have to start the server externally for now
CTRL-l will send either the line or the selected text to sclang
CTRL-. will send a "Server.local.freeAll;" to stop sound