Last winter when I was in Kirkwood, I came across this problem for a match against Aberdeen. I found info about an audio feed on Aberdeen's website, so signed up to their site (oh the shame :015: ) and it gave an option of buying a single match feed, or subscribing till the end of the season at £2something a month. I did the latter and was able to use the Service I signed up to through the package Aberdeen had to listen to several more SPL matches that were blocked by the BBC.
So even though CaleyThistle doesnt have any such block or arrangement in place it may be possible to get access to the matches through one of the clubs that have their own overseas media contracts.