I'm currently in the process of migrating most of my music making from FL Studio to Renoise but none of my options seem to work properly.
The thing I'm trying to do is to have Renoise as my master DAW for everything except a few of FL Studio's builtin synths (mostly Plucked! and FL Slayer). I first tried too use it a VSTi, but none of the FL Studio's configured MIDI channels show up in Renoise (I followed the multi-timbral plugin part in Renoise' documentation). I can only ever use one MIDI channel from within Renoise, though it does properly toggle to a different instrument if I change the configured channel. Both documentations mention they support it, but use different terms.
Second I tried Rewire via the Rewire input device (which works!) but it seems to make Renoise a permanently bottom-most window in Windows 7 and removes it's taskbar button. Doesn't necessarily react to keyboard input either (though it does until some point). Thus, it works from a routing point of view but renders Renoise itself mostly unusable.
If anyone has any success in linking the two (especially on Windows 7), I'd be super happy to know how. My next-best option would be to find a replacement from the builtin synths, but I'm quite fond of their sound and used them in most of my tracks. Haven't yet found ones with a sound or feature set like.