I feel you organist lady. Actually, you get more than I do. I get $250 a month and that includes everything rehearsals, travel, etc. I don't even see it by the time I give offerings, love offerings, and special offerings. But, I do feel that something should be given for travel...whether its gas money or being treated to dinner. Aside from this being a ministry, musicians are expected to be at everything at all times and then your told its for the Lord so you shouldn't expect to be compensated. I don't know of any preacher's who have been invited to speak to at churches and the host church says "We want you to preach, but we can't give you an offering". Its just automatic.
Also there are times when the pastor goes and the choir doesnt sing, but he still wants his musicians there. If you think about it, noone in the church has the expectations that are made of musicians. Its amazing how we are so important and needed, but not deserving of compensation.
My church takes an annual trip out of state every year and the musicians are expected to lug their equipment, play/minister through the whole service, break down and pack up the equipment and still pay for the bus and give an offering. Its almost like, well you have to do what the other members do, plus a whole bunch of other stuff. Last year, I didnt press to go. I went on vacation.
Maybe you can talk to your pastor about providing at least providing gas for travel. Or the alternative is to play for other functions at different churches. But pray about it first.
The bottom line is whether this is your source of funding as a primary job or not, its a ministry. My fulltime job is not a musician, but it is a ministry. God placed me here to minister as well. So we shouldn't throw around that playing is our ministry as a preface not to be compensated. My pastor preaches and thats is a ministry too, but he gets paid.
that's how I feel about it. Pray first and ask God to give you the right time to speak to your pastor and wisdom in handling this whole situation.