That would explain everything. I'm currently using my girlfriend's laptop, since it's 0:30PM here, and I'm off to bed. Hers doesn't have the lagarith codec, but my desktop does.
I basically have all the necessary codecs (like lagarith), and all common media players and tools (including virtual dub) on my desktop, but not here.
I'll check it tomorrow after work, and let you know :)
Although, if Harmy says it's good, I'm sure it is ;)