If you are asking if there is another venue where this software can be purchased (unlocked) then the answer is, no I don't think so... The software is free for 30 days but in order to continue using it, there's a fee to unlock it since there's a cost to use the Fraunhofer MP3 encoder. And since not everyone will utilize the mp3 format, Cakewalk opted to let folks choose on their own on whether to pay the Fraunhofer fee or not.
If you are looking for free alternatives to the Cakewalk encoder, there's LAME or CWENC (do a Google search).
Both these programs require that the files be exported as a Wave file before being converted to MP3, but the CWENC (Cakewalk Encoder) program will open the encoder automatically after the Wave Export.
If you are asking if there's a way for you to get the Cakewalk MP3 encoder for free or a crack to unlock it, then you are in the wrong forum. The Wanna-be hackers/Script Kiddie forums are found elsewhere.
Thanks, maybe I'll try LAME. BTW, I was not looking for a crack but was just frustrated that the current encoder had expired and did not know what to use.