That's only temporary. At the moment I'm re-uploading all the livesets from Tiësto from my Rapidshare account to my new Megaupload account. When I'm finished with that (will only take a few more weeks), there aren't so many livesets posted, only 1 or 2 per day I think.
And in the livesets box are only the new posted topics, not new replies or edits. Would be a shame if a discussion there is missed out.
For the radioshows I can agree with you. Most of them don't get replies/discussions and are already appearing in the Radioshows-box. An idea would maybe to have radioshows from the subforums (ASOT, CC, TCL, IRS, TATW, GDJB, etc) which are discussed a lot, still also in the Recent Discussions (cz guests have to see we're discussing them), but not the rest of the radioshows. At least not on the mainpage. If technically possible. It's probably automatically linked with the Recent Discussions on the forum, what contains ALL the topics ever made/discussed etc. and should stay like that I think.
If this is technically not possible, I would leave it as it is. Like I said, the Tiësto livesets are only temporary this high amount.