Great tip for all SSD users.
Mpd can understand a symbolic link to your external harddisk.
That means we do not have to copy/paste your complete music library to the ssd.
Buy yourself an external harddisk with >1TB and put your collection on there.
Right mouse click on the folder you want to point to and click on “Send to” and “Desktop create link” in XFCE. Cut and paste this link to your music folder ~/Music and WAIT – Be patient. Depending on your cpu and your music library it can take some time before the songs are in the library.
Go inside the music folder and make a link to your harddisk path and music folder.
ln -s /run/media/username/... external-drive