I developed a solution to play all titles on the SD-Card by simply saying "All Titles" in Voice Recognition. Until now you had to go to the menu, select SD-Card, select Titles and select any title. Now you just push the Voice Recognition button and say "All Titles".
Working for german and english, all non-supported languages will default to english.
Users willing to implement their own language may download the strings.xml file and send me a localized copy as PM.The SD-Scanning requires you to remove and plug in the SD-Card until now. Hope to find a solution to this soon.