If you need music for a podcast, there are pretty extensive libraries of royalty free music you can tap for it. The general rule is that if you do use copyrighted music, you'll need to limit it to either 6 or 60 seconds. I'm not exactly sure which, so look that up before using copyrighted music. However, for software, try hitsquad.com/smm. I have no clue what OS you're running, but they've got freeware for M$, MacOS, and Linux. Good luck to you.

I use Windows XP... yeah it´s my last frontier xD;

of course it would be easier to use existing songs for it or some certain parts from them but I guess sometimes it´s better to be original x3
I need to look into that link of yours more if I have the time ^^;

but looks interesting afterall :D