Even if you are swallowed by beast, you always have two ways out.
It's possible to build last version of LMMS immediately on your machine.
zhao-nan, you asked people about good free synth. I've found this yesterday - http://www.vst4free.com/free_vst.php?id=405 - it works in Wine, it has many good presets and enough "professional" sound. For my part - I'll use it in my musical practice.
Also you can test this - http://www.vst4free.com/free_vst.php?id=242 - it's emulation of old Soviet synth, when I was young, I spent a lot of time with original device. In good hands it can do a lot!
It's possible to build last version of LMMS immediately on your machine.
zhao-nan, you asked people about good free synth. I've found this yesterday - http://www.vst4free.com/free_vst.php?id=405 - it works in Wine, it has many good presets and enough "professional" sound. For my part - I'll use it in my musical practice.
Also you can test this - http://www.vst4free.com/free_vst.php?id=242 - it's emulation of old Soviet synth, when I was young, I spent a lot of time with original device. In good hands it can do a lot!