I like to think of mpd's like zips etc, so when you need to extract the contents you do so to a subfolder.
This way you always know what's what and you will not break search order and (imho) most important you can keep the subfile names short and minimize prefix redundancy.
This way you always know what's what and you will not break search order and (imho) most important you can keep the subfile names short and minimize prefix redundancy.