[function.dl]: Unable to load dynamic library

Hello,

Trying out to view some manually input .flv files, I came accross the following error:

• warning: dl() [function.dl]: Unable to load dynamic library '/Applications/MAMP/bin/php5/lib/php/extensions/no-debug-non-zts-20050922/ffmpeg.so' - (null) in /Volumes/cms hd/Web/drupal/modules/flashvideo/flashvideo.module on line 674.

It first appeared after I dowloaded a .flv file into the node (I put the Player.swf in both the file and file/video directory to be quiet about this).
ss: http://arsene.richard.free.fr/ged/fv/04_Drupal-PB-FV-dl_loading.png

Then I got this message 4 times on my frontpage...
ss: http://arsene.richard.free.fr/ged/fv/05_Drupal_4x%5bfunction.dl%5d_Unabl...

...while 4 files...
ss: http://arsene.richard.free.fr/ged/fv/06_Drupal-4x-FLV-recreation_FILES.png

...would be almost "simultaneously" created...
ss: http://arsene.richard.free.fr/ged/fv/07_Drupal-4x-FLV-recreation_TIME.png

...as witnesses the "Recently added content page":
ss: http://arsene.richard.free.fr/ged/fv/08_Drupal-4x-FLV-recreation_RECENTL...

Do you have any idea about what's wrong?

I deeply wish I could use your module, as it seems very powerful, and suits my needs. But I still got those "sorry..." messages before encountering this (ffmpeg) problem (I know your hosting advise!)... I wish my bug reports could be helpful to you.