Sometimes you have songs you'd like played together - concept albums, songs which have a Part 1 and Part 2, and so on. Is there a way to merge songs in Banshee to achieve this? Or an option to always play a set of songs together? Or do I have to separately merge those files? In that case, what is the lightest, simplest software to use?

I'm looking for a simple tool. I don't need a DJ kit - just a merger, nothing more as I won't be using it very often.