[Uploading Sounds - wrong chunk size?]

im just needing something simple software for converting mp4 to wav..any good or free ones out there? dont need anything nice..just something that does the job.

[when i try to log in gives me a error saying that i cant log in with this computer..please help]

i feel so lost..have no idea what to do here...it takes long time after i sumit a ticket about a problem...

when i try to log on a window pops up saying that i cant log on to secondlife on this computer..why? some one please help me here.