Flash not working in chromium

[Krosty]

Hi guys.
I ve installed chromium in mint, i ve copied the libflashplayer.so to the plugin folder of chromium.
My aboutlugins tab says:

Flash (2 files) - Versión: 10.3.162
Shockwave Flash 10.3 d162
Nombre: Shockwave Flash
Versión: 10.3 d162
Ubicación: /usr/lib/chromium-browser/plugins/libflashplayer.so
Inhabilitar
Tipos MIME:
Tipo MIME Descripción Extensiones de archivo
application/x-shockwave-flash Shockwave Flash
.swf
application/futuresplash FutureSplash Player
.spl
Nombre: Shockwave Flash
Versión: 10.3 d162
Ubicación: /usr/lib/flashplugin-installer/libflashplayer.so
Inhabilitar
Tipos MIME:
Tipo MIME Descripción Extensiones de archivo
application/x-shockwave-flash Shockwave Flash
.swf
application/futuresplash FutureSplash Player
.spl

But when i enter for example to facebook and i try to upload photos, it shows that i need to download the flash plugin.
Also if i enter to youtube, i can see videos but without sound :S.
Any idea?
Thanks

PD: In firefox if i try to see a video, it crashs, and shows this in terminal:

*** NSPlugin Wrapper *** WARNING/build/buildd/nspluginwrapper-1.2.2/src/npw-wrapper.c:3156):invoke_NP_Initialize: assertion failed: (rpc_method_invoke_possible(g_rpc_connection))
*** NSPlugin Viewer *** ERROR: /usr/lib/flashplugin-installer/libflashplayer.so: wrong ELF class: ELFCLASS64
*** NSPlugin Viewer *** ERROR: /usr/lib/flashplugin-installer/libflashplayer.so: wrong ELF class: ELFCLASS64

[electroman6913]

I use mint-flashplugin I had the same problem when using the adobe version. in the package manager uninstall the adobe flash plugin and install mint-flashplugin and see if it works better.