Did Ulead code Burn.Now 4.0 or did they license it from somone else like Sonic/Roxio?

Part of Ulead DVD MovieFactory 5 Plus is the Burn.Now 4.0 application. It reminds me a lot of Easy CD Creator 4 or 5 in interface but seems to be pretty rock solid by comparison, and is not bad at all so far.

My question is though, since Ulead was not known for CD/DVD data and music burning apps, did they create it in house or is it actually a licensed product from another maker, like Sonic/Roxio, Prassi, etc?

Any insight would be appreciated.

Thanks much,