The latest way to hear new music on the ‘net is Muxtape, a site aiming to revive some of the old-school joys of making a mix tape. (Note for the kids: Cassette tapes were once the preferred format for sharing favorite tunes with friends or girls/guys you had a crush on; it took hours, days, or weeks to transfer 90 minutes’ worth of records to tape in just the right order, but the finished product was worth it.) All users have to do to set up a free account is choose a name and password, submit their e-mail address, and move up to 12 songs from their computer to the company’s server. You can drag tunes around to change their order, then tell all your friends to go visit you at “YourUserName.muxtape.com.” (Mixes are accessible to other surfers as well.) You’re not supposed to upload MP3s to which you don’t have legal rights, but anecdotal evidence suggests that may not be enforced very strictly — in fact, the first Muxtape I listened to was 100 percent composed of commercial tracks. At any rate, since listeners can’t download the tracks as they listen to them (the files are streaming), record companies probably won’t worry much about piracy. (Plus, tracks have handy “buy this MP3″ links to keep the labels happy.)