Myna~
I haven't seen anyone mentioning this editor yet, so I figured I'd spread the word as it looks like it could be quite useful for some.
Myna is a sort of FL Studio-ish music-making/audio-editing platform (made by the amazing people of Aviary) that runs in your browser. You can easily import/edit sounds and audio clips of your own to use as building blocks for your new project, but if you're feeling rushed and just want to have fun making something right away, they've already provided an extensive library of clips to mess around with.
Once you're finished with your creation, you can upload it to the Aviary site to share, or you can save it to your desktop.

I personally still prefer LMMS since it has a sweet Game Boy chip and VST compatibility (plus it's always improving since it's open-source), but Myna is definitely a high quality tool worth checking out.

Take a look here, and don't forget to watch the helpful introduction video!