Thanks for your email and sorry for the inconvenience.
We remove the Dolby Digital 5.1 channel temporarily to improve this feature. Could you kindly keep an eye on our software to wait the update?
Could you tell us which method do you use to contact our Support team since we found no record via your email?
For the jumping picture, do you get the problem when play the video for preview in our software? We recommend you to go Tools-Options-Conversion to check Enble DVD Navigator and Enable Streaming MP4 Video then restart Leawo to reload the DVD. If not working, feel free to contact us anytime.