Their choice of words here is interesting - originally these devices were fairly accurately known as "mp3 players", but it got a bit silly since they could play audio files in a lot of other formats.
Wikipedia simply calls them digital media players, which is very sensible since many of them can play video as well (usually badly), but since it's a fringe use and they're generally used for just audio, why not call them "digital music players"?
Because audio is not just music. And Rockbox is designed as if it all was.
AudiobooksAnd that's a single word summary of everything that's wrong with Rockbox - audiobooks. It doesn't have dedicated audiobook mode like stock Sansa, or pretty much every other media player these days. And the reason a player would need an audiobook mode is that while from technical point of view playback of an audiobook chapter file is pretty much the same as of music file, UX has nothing in common.
In audiobook mode:
- You absolutely need high speed playback, pitch correction being highly desirable
- You absolutely need automatic per-audiobook resume function
- You never want random navigation - it's always whole audiobook start to finish
- You probably want filesystem navigation
- You want UI lock while it's in your pocket, since it's a massive pain if one click resets you to start of the chapter or even audiobook
- For podcasts it's the same except you might want per-chapter instead of per-audiobook resume if you're listening to multiple podcasts from the same source simultaneously
- You absolutely need to play at normal speed and pitch
- Nobody cares where you were last
- You probably want shuffle most of the time
- You might want playlists, including on the go playlist you can add things to while they play
- You might want per-song repeat
- You might want per-artist per-album or per-genre navigation
- You probably want per ID3 tag navigation, not filesystem navigation
- You don't care about accidental keypresses
- If you go shuffle, you want your entire music collection, but you definitely do not want audiobooks and podcasts in the mix