ok, so after some more work, the following applications have been fixed/updated/ported/added to the 64bit repo:
- google-chrome (new in 32 and 64)
- mjpegtools (fixed, was broken on 64)
- cinelerra (new)
- kino (new)
- kmediafactory (new)
- k9copy (

new and upgraded to 2.3.8 )
- videoporama (new and upgraded to 0.8.2)
still fighting with the upgraded 2ManDVD (1.8.4) but should get this working soon as well.
The above applications should come to your repo soon. They will close a gap for video-editing/processing in 64bit, so we are getting closer to a nice all-purpose 64bit system.

best!
-p.
edit: also added to 64bit:
- IrfanView
- wine-gecko