Those sections are already there m8.If u check the end of the forum page u see 2 sections "the lounge & fun section".The lounge is for public discussions and everything not related to muzik,the fun sections is for jokes.
Also under the "trance muzik" section u find "djs/productions" were u can post ur OWN productions there "u can post links to ur tunes".
Under the multemedia section u find "hardware/software" i guess it will answer ur request.