Flashira, you were not banned for your post; i suspect it was an accident. The winamp forum is flooded with spam, the mods have no rights to install scripts or filters, they must clean it all up manually, 15000 spammers in three months, each one making 10 or 20 posts. It just happens that an innocent user gets banned in the bulk cleanup.
They unbanned you the day after, but instead of sending them a PM, you complained publicly in the bitchlist, so they banned you again. Anyway, you should be unbanned by now.
That said, the winamp forum may be gone forever. The page just leads to a vBulletin message "Site is currently inactive" since this morning.