Greyed record button

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Hi, I'm not sure if this is a bug or what, but I am unable to record music in LMMS. I can play music and everything, but no matter what I do, the record button remains grey and inaccessible. What should I do? Because I'd really like it if I could actually record music with this program.
With LMMS 1.1.3, you can only record piano-roll tracks and automation tracks. The audio recording is not available (I don't know if is it possible with the RC).