Jürgen Wothke developed a flash based RSID music player. With this player you can listen online to your favourite SID music. The SID emulation logic is based on the TinySid code by T. Hinrichs and R. Sinsch. The player can play most PSID and RSID files, but is not 100% compatible with the real hardware. You can listen to many SIDs on Jürgen's web page.