I am considering to buy an Android tablet, but one of my requirements is that I can use some sort of music player with which I can easily schedule songs. A bit like the functionality of Clementine on Linux, where I can drag songs from the folder pane on the left to the playlist pane on the right. The idea is to attach an external harddisk with flac/mp3/ogg files.
Now I understand that Android is an entirely different platform with respect to a desktop Linux, and the programs will probably look different to optimize for touch interface. So I know I mustn't look for Clementine, but for a application that has similar functionality. So far all music players I've seen searching the Internet all have a very basic interface, mostly showing only the [Play] [Pause] [Next] [Volume] controls.
Are there any decent music players that can do this and that can read data from external USB disk?