bizmodeller

Mymedia scanned my hard drive and automatically added all m3u files. Some of them had _ and - in names to I can't ask to play it because it doesn't recognise. I don't know how to change playlist name without creating a new one. I have absolutely lots and lots od mp3's (all my cd's ripped to mp3) and I can' physically rename every single file on my hard drive. When I click pen icon on right side of playlist name it only shows me songs inside without any option to change playlist name or song order

You should just have to rename the playlist in Windows Explorer / Mac Finder. On the next rescan, My Media will remove the original playlist and create the new one with the new name. You can trigger a rescan by clicking Trigger Rescan in the Watch Folder tab