A free program for Android, by Apps10X.
This music player app is compatible with all the major music player formats and is capable of playing music in almost any format. The best part is that it is completely free.
There are tons of different options for customization. You can change the background, crossfade, widget layout, and even reorder the song queue. You can also add your pictures to the app. There are tons of different themes to choose from, and you can change the color scheme of the app.
The best part is that it is very easy to use. The app has an easy-to-use UI and a simple interface.