Multiple stations in one computer

[jaromanda]

first up ... transcoder takes one stream, and transcodes it into multiple formats

but, if you want the 4 different streams with different content, try 4 instances of sc_trans v2, each with their own playlist - I'm guessing this is an automated setup, not a live setup

sc_trans does have an API you can control it with (adding/changing playlists - the most useful to your setup, but the API is capable of much more)