If you prfer to organize your mp3′s in folder structure and want to play them as folder by folder rather than Tags or genre then you should get MortPlayer Music for Android Smartphone. MortPlayer Music is a simple to use music player for all those who prefer folder structure over tags. (You want your mix folder, not separated by artists, right?).
Home screen Widgets now in separate download “MortPlayer Widgets”
MortPlayer Music (beta) was developed for Android by sto-helit.de
Package name : de.stohelit.folderplayer.apk
File size: 550KB