im not to sure if importing media assets is an option? not looked into that area as yet.
but it does have purchasable media which actually does not really need to be paid for as you can from my understanding of it so far be earned in game just doing things as rewards. it seems to be being released on the 7th of October maybe on release out of beta it will come with more options for media importing but I haven't looked at this yet sorry m8 I cant help more but I only toyed with it quickly myself. but in 1 night of toying with it I earned over 5k worth of credits just doing simple things like making the terrain painting it and sculpting it ect the more you do the more you earn it seems, either making games or playing them gives rewards so plenty of things to do and such
. glad you find it fun I do aswell, and its my aim to on full release to do more with it while waiting on reloadeds next beta.
edit:
so after posting in their forums on the question of importing media for game making it seems that that is impossible and wont be introduced for safe guarding minors from undesirable content from people who might abuse that ability.
understandable as it is more aimed at younger gamers/creators.
but it also seems they are planning to bring out new content packs quite regularly (2 weeks to a month) and as the content packs can be earned for free or gotten very cheaply I don't really see much problem with this the 2 content packs I got today cost me only £7 for the pair and covers models to sounds and more
I also asked about standalone games, seems that it only runs the game if you have the software installed 1st and standalone is not an option also even though its for xbox1 aswell as pc sales of games wont be seemingly possible either, which is not problem for me either.
evga GeForce gtx 750 ti boost2.0 2gb gddr5. win 8.1 quad core 4gb ram.