I've reset my watch. Gotten rid of the playlists on Garmin Express. Gotten rid of them on Window Media Player. Gotten rid of them on the 245's files when connected to my computer.
After a reset, it says I have no music. Then I add my newly formed playlists, and the old ones are still there, saying "23 songs, 1 hr 20 min" but being empty when clicked on.
Have about 15 empty playlists with duplicate names, all claiming to have songs in them.