I really hope this is the correct forum to post these questions, cause they are kind of vague to me.

Question 1: Okay, I was trying to make my own textures for portals. I started with portal_blue_dx80.vtf, I think it was. To make a long story short, I lost that original file, so I'm dieing here. Does anyone have a permanent fix? Right now I'm just using a copy of the orange portal texture in place of my missing blue.

Question 2: When using my own wav files in place of looping_radio_mix.wav, they don't seem to loop. I can get it to play, but it won't loop. Any help?

1. It should still be in your .gcf-file. If you edited your .gcf-file, shame on you. You should reinstall the game in that case (I believe you can also 'repair' a game, check if all files are present, under the Steam options of that game).

2. Make sure you uncheck "Sound is NOT looped" under 'Flags' in your ambient_generic entity in Hammer.

2 ) The wav file must have que points, one at the start and one at the end. I don't know any completly free program that can add que points, but I believe you can use the evaluation version of GoldWave a limited amount of time.

The problem is, I'm not trying to make maps right now. I'm just trying to replace the normal looping radio song. (yes, i backed it up)