How are you attracting those visits, ads, word of mouth, etc? I run tubalr.com and have considered ads but am worried it will scare off the users I have. My traffic is a little more than what you're running... but its going down day by day.
My traffic is pretty much direct/word of mouth. I haven't done any advertising, just a few links on places like HN.
The problem with a YouTube video site like tubalr is you can't use adsense unless you have a lot of added content and you are competing with the ads in the videos anyways. And in my experience other ad networks have really bad CPM rates.
So you probably have to find another way to monetize the site, which is tricky. The sad fact is that music/video sites while fun to build are a hard way to make money (having built a few myself).
Instead of ads, I decided to try affiliated "buy this song on x site" buttons on my site (www.tunecrawl.com) under each song. It generates so low income, however, that I would have removed it a while ago if users didn't find it useful. Might be worth a try to see if you have the same result. If nothing else, it adds some additional functionality to the site and is easy to set up. I honestly think you could get away with some well placed ads on tubalr, though.
