I am quite a non-technical guy when it comes to such stuff and hence looking for "easy" solutions.
On Windows, I had used Red Kawa Videora to convert the various audio and video formats to iPod-playable formats. I think it also has a version which works on Mac.
I would like to know if there is other (possibly better and as much or more user-friendly) software which does the above job of converting various audio and video formats into what Apple products can play. (I guess what works on iPod also works on iPad.)