The new term is “digital audio player”. http://www.reddit.com/r/digitalaudioplayer is a good community for that. mp3s are out, if you want a really small file size, opus has better quality. If quality is more important than file size, rip to FLAC. I know at least for android, there are music player apps like musicolet and poweramp that will allow you to play songs from your phone if you have the storage space. The old ones work with modern computers. You can buy reconditioned ipods on ebay, but the new ones are better IMO. For ripping music a good community is http://www.reddit.com/r/musichoarder
4 year old article