i cart around a tiny rca pearl($15)with usb plug and keep at hand an inexpensive external drive of 500 g.of music. 1 aaa battery lasts at least 50 hours. there is the rechargable battery option, of course. with a nice set of phones, the sound is fabulous.
moving the music in and out is effortless.
i reduce the file sizes to 64 k. by using mp3 pro.
i put my vinyls, cds, radio programs, and tapes on the ext. drive.
the pearls are all but extinct, so i have purchased 4 backups.
the rca pearl is not sexy, trendy, or costly, but, then, i'm not either.