drmusic_99 is right. The RIAA would not have jurisdiction over anything but commercially-released products such as the two game show CDs, as well as some that go way back (possibly the Chuck Barris themes LP, pieces of stock music that were used as game show themes and were commercially released*), if they were released on RIAA labels. Since much game show music is not commercially released, individual composers and the ASCAP tend to be in charge of the copyright infringement. If you copied a master reel without consent from the composer, that's copyright infringement.
The fact of the matter is, since there is little to no financial gain from suing private collectors, as long as the music isn't being used for profitable ventures there is little risk of suing. And Matt O. is right, just don't be stupid about it.
* Think Pop Promotion, a cue from the 1972 version of The Joker's Wild. It has been commercially released and could fall under the cloud of the RIAA.