Scriabin Archive

Here are some pieces by composer Alexander Scriabin from the Internet Archive:

The Piano Concerto, performed by Vladimir Ashkenazy!

http://www.archive.org/flow/flowplayer.commercial-3.0.5.swf?0.008648623363132657

A piano etude transcribed for violin by Szegeti:

http://www.archive.org/flow/flowplayer.commercial-3.0.5.swf?0.6532732143998892

No.2 from Deux Poemes Op.71

http://www.archive.org/flow/flowplayer.commercial-3.0.5.swf?0.902995498899327

Sonata No. 4

http://www.archive.org/flow/flowplayer.commercial-3.0.5.swf?0.4857890448830152

I wish they had Piano Sonata No.3, my favorite of his piano sonatas, but for that you need to turn to YouTube:

The good news is that in addition to recordings, you can also find the sheet music online for free at IMSPL, another incredibly useful site, albeit with a much more specific focus than the Internet Archive. Also known as the Petrucci Music Library, it aims to collect and make available at one site all public domain sheet music!