Beloved music playlist hosting service Muxtape's gone offline to "sort out a problem with the RIAA," but if you've got some web server space, you can host, stream, and share your own digital music mixes Muxtape-style with newly-launched PHP web application Opentape. Opentape isn't affiliated with Muxtape in any way, but it's wildly similar, boasting a sparse, easy-to-use interface with drag-and-drop song rearrangement. To run Opentape, you've got to have a web server running PHP5 (or