Where can I buy these songs?

[steamboat26]

Heres the deal- there are these two drum and bass songs I have looked everywhere for, but nobody seems to be selling them. I don't wanna buy it on vinyl, because I don't have a record player. I found Quest on the iTunes Store, but it isn't the full version. These songs are supposed to be about 5 minutes long, but most of the places I have found them have them in mixes or just as clips for vinyl.
Anyways, if anyone can help the two songs are:

Quest- Andy C & Shimon
Siren- Spirit (Hive Remix)