Apparently, it's not a good week for relatives. My friend's grandfather just recently passed away, and now my grandfather has died too! He was quite messy, and I had to help clean out his belongings. He managed to collect quite a lot during the years, but nearly everything was in poor condition. We found a large clock with only one hand, a huge safe with the door stuck, a filing cabinet partially broken and full of non-sensical papers, and even an old issue of Playboy! In short, he had all kinds of stuff...
While I was going through all his things, I suddenly remembered that he gave me a USB stick some weeks before his death, and told me, "This is your inheritance!" Due to lack of time I never looked at it, but while taking a break during the cleanup, I plugged it into my computer and opened it up. I was quite disappointed to find that it contained only two seemingly simple files.
There was text file with the line Find me, and unlock me!
and an audio file with this song (here). I could not find anything useful from it... but maybe you can help me find my inheritance? What do I have to look for, and how can I unlock it?
Update: While browsing mindlessly on YouTube today, I found something which sounds really similar, but not totally. I could not find out, what, but something was odd...
Update II: I recognized something while listening to the version of my grandfather: It seems to go faster and slower at some times. Might be a hint?