Nowhere. Latency is just too high with Flash or JavaScript or Java applets, even the best online apps are atrocious. I always tinker with them when I see a link to them, but they always disappoint. Most iPhone and Android music apps are also pretty much useless, unfortunately...I love composing in odd places.<p>There are many good free (and low cost) installable apps, though.<p>On Linux, there's LMMS, Ardour, Audacity, which all do different things...I'm guessing LMMS is the one that fits your description best.<p>On Windows, there's FL Studio, and dozens of others.<p>On Mac OS X, I dunno the low cost options, but I'm sure they exist, since Mac is a very heavily used music platform.<p>My toolchain contains the following software:<p><pre><code> REAPER
Renoise (on both Linux and Windows)
LSDJ (on Gameboy)
MSSIAH (on C64 with a SID2SID)
</code></pre>
I will probably add FL Studio to the bunch eventually, but I mostly do live music and chiptunes, so it's not something I <i>really</i> need. But it's cheap enough to buy just to tinker with.