Hi,
I experienced almost the same issue a few days ago with adding a MP3 on the timeline. I've just removed K-LITE CODEC PACK, and that's it (advice from the technical support).
In all cases, this is a conflict with CODECs
I'll find the address of my issue in the forums which contains the reference to a specialist who gave me also a solution.
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Dominique
Paris - France
PowerDirector9 - patch #2930
Windows XP - Asustek P5W DH - Intel Core2Duo 3.00 GHz E6850 - 2 GB RAM - NVIDIA GeForce 8600 GTS 256 MB -
DirectX 9.0c