The intent might have just been to extend to portable media devices, but the wording covers a whole lot more.
The actual motion reads:
"That the Committee recommends that the government amend Part VIII of the Copyright Act so that the definition of “audio recording medium” extends to devices with internal memory, so that the levy on copying music will apply to digital music recorders as well, thereby entitling music creators to some compensation for the copies made of their work." (http://www2.parl.gc.ca/HousePublications/Publication.aspx?DocId=4349743&Language=E&Mode=1&Parl=40&Ses=3)
So it doesn't just apply to mp3 players, but portable media players, digital camcorders, set top boxes, consoles, cell phones, digital cameras, computers, etc.