Even if there aren't, yet, at the end of the day LMMS is just a tool, like any other digital audio workstation. There's always battles on the internet about which one to use and it's kind of pointless since they really don't enhance creativity or the final product IMO. That being said, LMMS is a gre...

I'm not entirely sure if this is possible, but one workaround would be to sidechain the kick to your source with a compressor and then print the audio stems. From here, you can then mute the kick. Edit: OH also; I'm not sure if this is possible either, but if you can set the sidechain to pre-fader, ...