These free songs, to make it clear, are not illegal by a long shot. They're songs you could listen to for free anywhere. That is, with this app, instead of finding world-famous artists, you will find more up-and-coming musicians.
In addition to discovering new music, Music Player - Audio Player has great support for different file formats. You can listen to any song in MP3, MP2, MP1, OGG, WAV, AIFF, MIDI, AAC, AAC, 3GP, XM, IT, S3M, MOD, MTM, UMX, MO3, MP4, M4A, or OTA formats.
Another less important but also interesting feature is the option to change the skin of the app in seconds (there are loads available for download). You can also alter the sound of your music with a five-band equalizer.
Music Player - Audio Player is a good music player that comes loaded with features. Its only problem is that its interface is a bit confusing, and doesn't quite come together nicely.
Requires Android 2.3 or higher