provided by Section 2.42, 2.48 through 2.52, if the content of the particular program in which the performance or display is embodied, or any commercial advertising or station announcements transmitted by the primary transmitter during, or immediately before or after, the transmission of such program, is in any way willfully altered by the cable system through changes, deletions, or alterations, except for the alterations, deletion, or substitution of commercial advertisements performed by those engaged in television commercial, advertising market research; provided, that the research company had obtained the prior consent of the advertiser who has purchased the original commercial advertisement, the television station broadcasting that commercial advertisement, and the cable system performing the secondary transmission; and provided further, that such commercial alteration, deletion or substitution is not performed for the purpose of deriving income from the sale of that commercial time. SECTION: (a) (b) (c) 2.13 LIMITATIONS ON EXCLUSIVE RIGHTS: EHPEMERAL RECORDINGS Notwithstanding the provisions of Section 2.6 and except in the case of a motion picture or other audiovisual work, it is not an infringement of copyright for a transmitting organization entitled to transmit to the public a performance or display of a work, under a license or transfer of the copyright, to make no more than one copy of sound recording of a particular transmission program embodying the performance or display, if ­ (1) the copy or sound recording is retained and used solely by the transmitting organization that it, and no further copies or sound recordings are reproduced from it; and (2) The copy or sound recording is used solely for the transmitting organization's own transmission within its local service area, or for purposes of archival preservation or security; and (3) Unless preserved exclusively for archival purposes, the copy or sound recording is destroyed within six months from the date the transmission program was first transmitted to the public. Notwithstanding the provisions of Section 2.6, it is not an infringement of copyright for a government body to make no more than thirty copies or sound recordings of a particular transmission program embodying the performance or display if ­ (1) No further copies or sound recordings are reproduced from the copies or sound recordings made under this clause; and (2) Except for one copy or sound recording that may be preserved exclusively for archival purposes, the copies or phonorecords are destroyed within seven years from the date the transmission program was first transmitted in the public. Notwithstanding the provisions of Section 2.6, it is not an infringement of copyright for a government body or other non-profit organization to make for distribution no more than one copy or sound recording for each transmitting organization specified in clause (2) of this sub-section, of a particular transmission program embodying a 17