Opentape is an extremely easy-to-install,  open source implementation of Muxtape. You unzip it, upload songs, and you're done. No database to set up, no need to edit php files in vi. It looks like Muxtape, except with an unlimited number of songs. 

(For those that don't know about about Muxtape,  Muxtape is a web-based tool for sharing and listening to music.  Like much social software,  it benefits from a network effect, getting better and more useful the more people use it, and being hard to explain to people who don't.  (Explaining social software to people who don't use it can be frustrating. "It plays music? With your friends?" That's it? Le sigh.)

Muxtape is also basically gone. It became unavailable last week.  In their redirect they confirmed some issues with the RIAA.  But since the day they went dark, they've made no more public statements about the situation, which is a bit confusing and unfortunate.  I don't feel wronged, after all, they were giving us a great free service.  But I wish they could communicate a bit more, especially when their software has so many non-infringing uses and passionate users.)

But let's get back to Opentape.

What an opentape looks like for the listener/ visitor (via screenshots from the Opentape live demo):