Yeah, the Audio Portal is overlooked, and yes, it would take lots of work and time 2 make it equal 2 the flash portal, or atleast make it better... But... Alot of people will come 2 Newgrounds, because it has free music. It will be like this:
Me: "Ey dude, have you heard that new catchy tune from (randomnamehere)?"
Friend: "Not yet..."
Me: "Well, its here: (url 2 audio portal song here)"
Friend: "Newgrounds? I thought that was only for flash movies!?"
Me: "Nah, lotsa hard-working artists, including Dj's and other musicians, upload their stuff there :)"
Friend: "Oh, ok, lemme c..."
*checks newgrounds' audio portal*
Friend: "Oh yeah, now I see! Cool! This song rocks!"
Me: "Jup :) It does"
I think it seriously would attract more visitors. More visitors = more clicks on adds. More clicks on adds = more money. More money = more things 2 boost the site. More things 2 boost the site = more visitors. :)
Wow, I feel smart now :P