Clementine is a cross-platform free and open source music player and library organizer. It is a port of https://alternativeto.net/software/amarok/ 1.4 to the Qt 4 framework and the GStreamer multimedia framework, focusing on a fast and easy-to-use interface for searching and playing your music. It is available for Unix-like, Windows and Mac OS X.

Features:
Search and play your local music library
Listen to internet radio from Last.fm, SomaFM, Magnatune, Jamendo and Icecast.
Create smart playlists and dynamic playlists
Tabbed playlists, import and export M3U, XSPF, PLS and ASX
Visualizations from projectM
Lyrics and artist biographies and photos
Transcode music into MP3, Ogg Vorbis, Ogg Speex, FLAC or AAC
Edit tags on MP3 and OGG files, organise your music
Download missing album cover art from Last.fm
Native desktop notifications on Linux and Mac OS X
Remote control using a Wii Remote, MPRIS or the command-line
Copy music to your iPod, iPhone, MTP or mass-storage USB player
Queue manager
Android remote control

Clementine

Windows

Linux

Clementine is a cross-platform free and open source music player and library organizer based on Amarok 1.4.

iTunes is the best way to organize and enjoy the music, movies, and TV shows you already have — and shop for the ones you want to get. 

You can even tune in to free, on-demand music stations that have been totally revamped by our Apple Music experts. 

Enjoy all the entertainment iTunes has to offer on your Mac and PC.

Note: Starting with the release of https://alternativeto.net/software/mac-os/ Catalina, iTunes for macOS will be split into three applications: https://alternativeto.net/software/apple-music/, https://alternativeto.net/software/ipod-iphone-podcast/, and https://alternativeto.net/software/apple-tv/. https://alternativeto.net/software/finder/ will take on the role of managing Apple devices, such as the iPhone and the iPad.

iTunes

iPhone

Windows S

iPad

Media player, media library, Internet radio broadcaster, and iPhone device management application.

Equalizer/DSP Plugins (Winamp-compatible)

-Library View.
-Waveform Seekbar / Progress bar

Manage your music as a library, as playlists or as folders on the file-system. Organize, browse and find music on your computer, on portable devices and on the web. Small or large collections are handled with ease.

Have folders watched for new tracks and added to your library, with the option to tag the files from an Inbox beforehand.

Also manage and download Podcast subscriptions and listen to your favourite radio stations, including Shoutcast, Jamendo and Last.fm stations.

Tag music easily, with a large number of tags available for editing*, and custom tags that can be configured to edit other less common tags.

Play MP3, FLAC, Vorbis, WMA and other formats and optionally have those tracks scrobbled to Last.fm. You are not restricted to music files on your computer - you can play the web as well. Playlists are automatically created from MP3 blogs and web pages you visit.

Securely rip tracks from your CD collection as individual files or as a single album file with an embedded cuesheet. You can also have your rips validated against AccurateRip.com for extra assurance.

Synchronise music files, podcasts and playlists from your library, or music files from any folder to many portable devices. These include iPods, iTouch/ iPhone, MTP devices (most portable devices other than iPods), and USB devices. You can also drag and drop files to the device yourself.

Convert music files from one format to another* without losing tag values; normalise the volume of your files so you dont have to keep adjusting the volume; update missing tags and album artwork from the web; and more.

MusicBee

MusicBee makes it easy to manage, find, and play music files on your computer. MusicBee also supports podcasts, web radio stations and SoundCloud integration.

Overcast is a  powerful yet simple iPhone podcast player.

*Smart Speed*

Pick up extra speed without distortion with Smart Speed, which dynamically shortens silences in talk shows.

Conversations still sound so natural that you’ll forget it’s on — until you see how much extra time you’ve saved.

*Voice Boost*

Boost and normalize volume so every show is loud, clear, and at the same volume.

Listen in more places, such as noisy cars, and still hear what everyone says without cranking the volume so high for quiet people that the loud ones blow your ears out.

*Smarter Playlists*

Create show priorities, filters, and sorting rules, or keep it simple with one big list.

You can reorder the list whenever you want, and new episodes are inserted intelligently.

*More Discovery*

Find new shows from your Twitter friends and spread the word about great shows by recommending the best episodes, all without posting anything. No spam or tricks: just spreading good shows.


Overcast

Online

Apple Watch

A powerful yet simple podcast player for iPhone, iPad, and Apple Watch. .

Powerful meets thoughtful.
iVideo has now gone through 12 years of feature requests and improvements, and it shows.
Organize your videos with smart libraries, smart playlists, and smart playback.
Keep your files anywhere you want — iVideo can keep track of them.
Play multiple videos in a row, with support for chapters and multiple audio tracks.
Tag videos by dragging them onto playlists.
Control playback with an Apple Remote.
Undo/redo is available for almost everything.
Share your videos over a local network.
Find duplicate files automatically.

...and much, much more!

iVideo 7

Powerful meets thoughtful.iVideo has now gone through 12 years of feature requests and improvements, and it shows.

Mirage is an implementation of the latest research in automatic playlist generation and music similarity. Mirage analyzes your music collection and computes acoustic similarity models for each song. After your music collection has been analyzed, Mirage is able to automatically generate playlists of similar music.

Mirage (Banshee Extension)

Banshee

Mirage is an implementation of the latest research in automatic playlist generation and music similarity.

Apps with 'Smart playlists' feature