Hi.
As you I had some problems with Tunebite and the Windows Media Revocation & Renewal error message. My problem was my AV program, I have Bitdefender and I had to get into Antivirus, Advanced Settings and then exclude all the Exe files from
Tunebite in Bitdefender Active Virus Control. I also had to exclude a file in Windows\System32 called mfpmp.exe, its a file necessary for playing protected WMA files, so you cant delete it. After that everything works like a charm. Regarding many files and clipping there is a feature in Tunebite, where you can set the speed manually, I dont know about ST, but think there must be at similar feature. But I think your main problem is Windows Media Revocation & Renewal error message, Ive read somewhere else, that a service called Tablet PC should be deactivated as well, but I haven't done that.
Hope this helps
Tomb58