If BSplayer would had support for it you only needed to add this to your registry:
Code:
REGEDIT4
[HKEY_CLASSES_ROOT\Directory\shell\BSplayer.Play]
@="Play in &BSplayer"
[HKEY_CLASSES_ROOT\Directory\shell\BSplayer.Play\command]
@="\"C:\\Program Files\\Webteh\\BSplayer\\bsplayer.exe\" \"%L\""
But since BSplayr doesn't currenty support it, only (?) other solutioon is to select the option "Always add all files in current directory to the playlist" in Playlist settings (CTRL+P -> Playlist) and then you only have to double-click one file in that folder and every other file present in that directory will be added to the playlist.. I know it's not what you wanted, but until the devs will add this feature to BSplayr, you can use this solution :roll: