According to the Canadian copyright act, copying music for private use is not infringing:
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Copying for Private Use
80. (1) Subject to subsection (2), the act of reproducing all or any substantial part of
(a) a musical work embodied in a sound recording, ....
(2) Subsection (1) does not apply if the act described in that subsection is done for the purpose of doing any of the following in relation to any of the things referred to in paragraphs (1)(a) to (c):
(a) selling or renting out, or by way of trade exposing or offering for sale or rental;
(b) distributing, whether or not for the purpose of trade;
(c) communicating to the public by telecommunication; or
(d) performing, or causing to be performed, in public.
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Since the treaty only concerns infringing content, and by definition no musical content from Canada is infringing, as long as it's for personal use, no ipods/cell phones/etc should ever be seized or searched. Unless of course, you plug your ipod into some speakers and give a live performance that you charge admission to, or rent your ipod to someone.
